Calculator

The Calculator is a key item found in Paper Mario. It is owned by Rowf and Rhuff, and it is stolen from them by Shy Guys after Mario rescues Skolar.

Rowf and Rhuff cannot run the badge shop without the Calculator, and they require it to be retrieved for them to reopen. The Shy Guy with the Calculator in Shy Guy's Toy Box is located in the playground west of the Blue Station area. Defeating it and returning the Calculator to Rowf and Rhuff rewards Mario with an I Spy Badge.