Grow Caps allow you to return quickly to certain places you've visited before in the Castle. You get them from Grow Cap Dispensers (they look like overgrown dino-gumball machines.) When activated a cap will zip you back to its place of origin. Tip: Since Grow Caps are expended once you use them, you'll want to stash extras back in Your Room.

Grow Cap	Room Name/Number	Grow Cap	Room Name/Number
	Faucet Hall (9)		Dead End (30)
	The Wading Pools (2)		The Central Fountain (37)
	???		Club Infinity (36)
	Scram Center (34)		Hazard Hall (27)
	Le Grand Race Track (45)		Chaos Corridor (26)