Thank you to a this for exact info on many drops

Artwork of overalls from Mario & Luigi: Bowser's Inside Story   Overalls   Artwork of overalls from Mario & Luigi: Bowser's Inside Story
Name Location(s) / Drop(s) Price / Requirement Effect(s)
A-Star Wear Toad Town 20000 coins & Star Rank HP +30, SP +10, POW +20, DEF +150, SPEED +20, STACHE +20
Immune against all status ailments
Adult Wear Bowser Memory M DEF +50, SPEED +10, STACHE +10
Balm Wear Toad Town 2000 coins & Shine Rank DEF +90
Brawny Wear Blubble Lake POW +10, DEF +45
D-Star Wear Peach's Castle, Dark Star POW +80
Fighter Wear Pump Works, Leaf Guy POW +5, DEF +25
Heart Wear Plack Beach HP +10, DEF +80
Hero Wear Toad Town, Energy Hold 1500 coins & Shine Rank DEF +60
Leisure Wear Toad Town 200 coins DEF +30
King Wear Toad Town, Airway 2500 coins & Star Rank DEF +100
Master Wear Challenge Node All A Ranks in Cholesteroad SP +20, DEF +140
Special attack POW +25%
Muscle Wear Toad Town POW +20, DEF +65
Koopa Wear Toad Town 500 coins DEF +40
Picnic Wear Toad Town, Pipe Works 30 coins DEF +15
Star Wear Toad Town, Airway 3000 coins & Star Rank HP +20, SP +10, DEF +120
Thin Wear Equipped at start DEF +15
Artwork of socks from Mario & Luigi: Bowser's Inside Story   Socks   Artwork of socks from Mario & Luigi: Bowser's Inside Story
Name Location(s) Price/Requirement Effect(s)
Bro Socks Challenge Node A Rank in Yoo Who Cannon Doubles defense when holding a KO'ed bro
Coin Socks Toad Town Caves If the wearer takes no damage during a battle, 1.5x coins awarded
Deluxe HP Socks Blubble Lake +30% HP
Doctor Socks Airnapse 10 HP regenerated per turn
DX SP Socks Dimble Wood +30% SP
EXP Socks Flab Zone If the wearer takes no damage during a battle, 1.3x EXP awarded just for the wearer
Gall Socks Toad Town 50 coins Foes are 50% more attracted to attack the wearer
Guardian Socks Pump Works, Airway 8 HP & 2 SP regenerated per turn
Gumption Socks Toad Town 10000 coins & Star Rank If the wearer is KO'ed, revived automatically with half-HP after one turn.
HP Socks Toad Town 300 coins +20% HP
Hustle Socks Coalbit, Mawful Mole Flee block works instantaneously instead of losing coins
Iron Wall Socks POW/SPEED Pep Immune against all status ailments
Nurse Socks Toad Town 400 coins 4 HP regenerated per turn
Rugged Socks Airway, Scutlet +20% DEF
SP Socks Toad Town 500 coins & Shine Rank +20% SP
Special Socks Toad Town 600 coins & Shine Rank 1 SP regenerated per turn
Starch Socks Toad Town 250 coins +10% DEF
Surprising Socks Peach's Castle 3 SP regenerated per turn
Gloves   Gloves   Gloves
Name Location(s) Price/Requirement Effect(s)
Bye-Bye Gloves Bowser Path Solo hammer attacks by wearer may one-hit KO an enemy regardless of its HP
Delicious Gloves Energy Hold Doubles the effects of healing items
DX POW Gloves Toad Town1, Peach's Castle 15000 coins & Star Rank +20% POW
Flower Gloves Plack Beach Fire Flower POW +20%
Special Gloves Junker Special attack POW +15%
Heavy Gloves Toad Town 500 coins & Shine Rank Solo hammer POW +20%
Item Gloves Toad Town 600 coins & Shine Rank Enemies hammered (solo) by wearer are more likely to drop items/equipment
Mushroom Gloves Plack Beach Wearer occasionally uses a random type of mushroom before making a move
POW Gloves Toad Town, Durmite 400 coins +10% POW
Siphon Gloves Challenge Node A rank in Magic Window Solo hammer attacks by wearer restore 10% SP
Softener Gloves Piranha Plorp Enemies hammered (solo) by wearer may have their defense lowered
MLRPG3 C Boot.png   Boots   MLRPG3 C Boot.png
Name Location(s) Price/Requirement Effect(s)
Big Stomp Boots Plack Beach First-strike jump POW +30%
Coin Boots Glam Lakitu Enemies jumped on occasionally drop coins
Daredevil Boots Challenge Node A Rank in Jump Helmet Doubles POW but any hit KOs the wearer instantly
Dizzy Boots Challenge Node A Rank in Super Bouncer On solo jump attacks, enemy may become dizzy
DX POW Boots Toad Town 20000 coins & Star Rank POW +20%
Full Throttle Boots Sockop +30% POW only when wearer's HP is 100%
Heavy Boots Toad Town 600 coins & Shine Rank Solo jump POW +20%
POW Boots Flab Zone POW +10%
Shell Boots Bowser Green Shell POW +20%
Shroob Boots Shroobs On solo jump attacks, enemy's POW may be cut in half
Siphon Boots Toad Town, Wisdurm Durmite 1000 coins & Shine Rank On solo jump attacks, 5% HP regenerated
Special Boots Energy Hold Special attack POW +10%
Artwork of the Accessories from Mario & Luigi: Bowser's Inside Story   Accessories   Artwork of the Accessories from Mario & Luigi: Bowser's Inside Story
Name Location(s) Price/Requirement Effect(s)
Advice Patch Challenge Node A Rank in Spin Pipe Random special attack POW +30%, changes every turn
Bad Scarf Stonk, Pendril When HP reaches less than 1/4 (critical), defense is doubled
Big Shell Drillbit Crab Negates the damage of the first three hits of each battle
Budget Charm Toad Town, Toad Town Caves 1500 coins & Shine Rank All special attack SP costs -30%2
Challenge Medal Challenge Node A Rank in Green Shell All enemies have all stats (HP, POW, DEF, SPEED) increased 50%, but coins gained from battle also increased 50%
DEF Mush Jam DEF Pep When wearer eats a mushroom, DEF +20%
Giant Shell Bowser Path Blocks all (relatively) small damage
Gold Crown Glam Lakitu None, but has a high selling price
Gold Ring Lakitu King None, but has a high selling price
Happy Charm Toad Town, Nooz 500 coins & Shine Rank Increases rate of lucky hits +50%
Heroic Patch Bumpsy Plains Special attack POW +30%, but SP cost doubles
KO Shell Toad Town If wearer KOs an enemy, any damage inflicted on the wearer is negated on that same turn
Lucky Charm Dark Fawful, Dark Fawful Guy Doubles rate of lucky hits
Luxury Patch Blubble Lake Special attack POW +20% but SP cost +50%2
Mushroom Stone Toad Town All drops become mushrooms
POW Mush Jam Bowser Path When wearer eats a mushroom, POW +20%
Small Shell Toad Town Hide and Seek sidequest Negates the damage of the first hit of each battle
Thrift Charm Toad Town1 1000 coins Random special attack SP cost -40%2, changes every turn
Tight Belt Toad Town 10000 coins & Star Rank All special attack SP costs cut in half2
Treasure Specs Toad Town Find all Mushroom Balls Doubles chances of drops
Vengeance Cape Magifoofa, Air Cannon +5% POW when wearer takes damage, max 30%, reset every battle
Shell   Shells   Shell
Name Location(s) Price/Requirement Effect(s)
Armored Shell Broggy3 1600 coins DEF +130
Dream Shell Broggy 2400 coins DEF +220
Ironclad Shell Cavi Cape DEF +300
Judge Shell Cavi Cape DEF +75
King Shell Blubble Lake Broque Madame – All A Ranks SP +20, POW +20, DEF +260
Rampage Shell Blubble Lake POW +20, DEF +100
Rock Shell Underground Tunnel DEF +90
Safety Shell Broggy 400 coins DEF +60
Shabby Shell Equipped at start DEF +20
Special Shell Broggy 200 coins DEF +40
Wicked Shell Peach's Castle POW +30, DEF +180
Bracelet   Bands   Bracelet
Name Location(s) Price/Requirement Effect(s)
Block Band Dimble Wood 4 Blitties +20% DEF
Fury Band Blubble Lake Broque Madame – A Rank in Bob-omb Blitz When under "fury" status ailment, +20% POW
Hunter Band Broggy 2500 coins +10% POW when foe is KO'd, max 30%, reset every battle
Iron Fist Band Broggy 400 coins Punch POW +20%
Lucky Band Broggy 200 coins Doubles rate of lucky hits
Minion Band Bumpsy Plains 2 SP regenerated per turn
Minion Band SP Dark Trashure 4 SP regenerated per turn
Power Band Bowser Path +10% POW
Power Band + Peach's Castle +20% POW
Stamina Band Peach's Castle +15% POW when a drumstick is consumed
Vampire Band Broggy 2000 coins On punch attacks, 8% HP regenerated
Fangs   Fangs   Fangs
Name Location(s) Price/Requirement Effect(s)
Block Fangs Dimble Wood 8 Blitties +20% DEF
Bone Fangs Blubble Lake Broque Madame – A-Rank in Koopa Corps +30% DEF when a drumstick is consumed
Burning Fangs Bowser's Castle Doubles chances of flame causing "burn" status ailment
Flashy Fangs Bowser's Castle None, but has a high selling price
Fury Fangs Blubble Lake Makes it 50% easier to become furious
Intruder Fangs Final Boss Rank (Level 40) Can do two actions consecutively per turn
Power Fangs Choomba +10% POW
Power Fangs X Dark Mechawful +20% POW
Red-Hot Fangs Cavi Cape Flame POW +20%
Special Fangs Underground Tunnel +20% SP
Special Fangs X Peach's Castle +40% SP
Artwork of the ring from Mario & Luigi: Bowser's Inside Story.   Rings   Artwork of the ring from Mario & Luigi: Bowser's Inside Story.
Name Location(s) Price/Requirement Effect(s)
Block Ring Dimble Wood 12 Blitties +30% DEF
Cheap Ring Underground Tunnel Random special attack SP cost -30%, changes every turn
Drumstick Ring Tower of Yikk Occasionally uses a random type of drumstick before making a move
Economy Ring Peach's Castle All special attack SP costs cut in half
Excellent Ring Crawful 10% SP restored on excellent attacks
Fast Cash Ring Trashure Doubles coins from enemies KO'd in the field4
Fill-Up Ring Broggy 4 SP regenerated per turn
Glutton Ring Broggy, Sniffle Thwomp Can eat two drumsticks in a turn
Hard Ring Dimble Wood +20% DEF
Heroic Ring Blubble Lake Broque Madame – A Rank in Magikoopa Mob Special atttack POW +30%, but SP cost +50%2
Peace Ring Broggy 2000 coins 15 HP regenerated each turn
Restore Ring Peach's Castle 10 HP & 3 SP regenerate each turn
Safety Ring Bumpsy Plains +20% HP
Treasure Ring Blubble Lake Broque Madame – A Rank in Goomba Storm Doubles chances of drops

1There is a ? block somewhere in Toad Town containing this as well as it being available in a shop
2Rounded up
3Also available via any Shop Block, certain things become available only when player defeats certain bosses 4These would be the "tiny" enemies Mario & Luigi battle formally but Bowser simply knocks over