Fungi Light

The Fungi Light is a unique object appearing in Super Mario RPG: Legend of the Seven Stars. One is owned by Mario and can be found in his home. If Mario turns off the Fungi Light, he goes to sleep and recovers all of his HP and FP. Coincidentally, the other Fungi Light is located at the most expensive inn in the game, the suite in Marrymore. Of course, turning off the light and taking a rest will recover all of the plumber's party's HP and FP. However, use of this lamp will cost two hundred coins and an additional one hundred coins with each subsequent night stayed in the suite.

In Monstro Town, Mario has to turn off an actual fungus before he can go to sleep.