[simcop2387]

There's a few, One is "for science" find the portals and get the cake.

The other is a maze to a rickroll, and then there's a fox potion that turns you into a firefox that makes you invincible for a short time.

[appalsap]

FYI, to get to the rickroll you can go through either entrance, and then just keep going back through the door you came through.