Fire Boots
(There is a Sega CD game called "Popful Mail", and in it a series of "boots" items for traversing various surfaces. Stone boots let you walk on spikes. Spike boots let you tread on ice without slipping. Ice boots allowed you to walk through fire. But there was no "fire boots" for walking on stone (which would've completed the circle). Just thought I'd explain the inside joke here...)
Go Moon!