Instant Revitalizing Device

Instant Revitalizing Devices (Japanese: Instant Energy Machine) are machines in EarthBound and Mother 3. When used, they restore HP, PP, and status ailments, notably curing homesickness.

In EarthBound
Instant Revitalizing Devices in EarthBound only appear in a few locations, most notably in Dr. Andonuts' lab and in Dungeon Man. Using the check command on them will activate them. They are one of the few methods other than hospitals to restore consciousness to a fallen or diamondized party member. This is also the only way to cure homesickness other than calling Ness's mother or talking to Dr. Saturn.

In Mother 3
In Mother 3, Instant Revitalizing Devices are much more common, now sporting a pig nose shaped mark on them. They can generally be found anywhere that the Pigmask Army is based, however, they can occasionally appear elsewhere, such as on the Highway. They serve a similar purpose to the Hot springs found elsewhere, but are slightly faster.

Memo
"It seems the guys in pig masks use these when they rest. Entering the device will result in a mysterious energy that completely revitalizes the body, as if by magic."