The mimic spits out boots of mad hops.

I brew a nice beer out of the boots of mad hops and give it to the mimic.

The mimic spits out a killer rabbit. 

I wait for the rabbit to finish with you and wander off, then I feed the mimic your remains. 

The mimic spits out a holy hand grenade to blow up the rabbit.

I soar down from heaven on angel wings and feed the mimic Homer Simpson.

The mimic spits out a box of infinite doughnuts.

I feed the mimic all the Super Smash Bros. games starting with the N64 game.

The mimic plays Kirby, and beats everyone he fights.

I feed the mimic Boba Fett.

A parade celebrating bubble tea walks out of the mimic's mouth. (Hue wordplay)

I feed the mimic a brass sculpture of the world's largest cheese curd.

The mimic chucks out seventeen tubes of crocodile toothpaste. 

I feed the mimic an old, beaten up Jimi Hendrix CD.

The mimic spits out a restrung, left-handed guitar.

I feed the mimic legos and crazy glue.

The mimic spits out a very large life sized maze made of legos glued together, and the floor has legos glued to it point-up. The maze can only be run bare-foot; who knows what prize could be at the end.

I feed the mimic a bunch of transformers toys and figures.

The mimic morphs into several different vehicles before spitting out "Dare to be Stupid" on vinyl.

I feed the mimic my pile of cursed dice.

The mimic rolls several 1's and gives you a broken pen as a equally valued gift.

I shall bestow opon the mimic a nobel peace prize.

The mimic doesn't think the prize tastes very good, so it spits a cone of cold at you.

I feed the mimic a belt of cloud giant strength.

The mimic spits out a bag of beans that all grow bean stalks to cloud giant fortresses.

I feed the mimic a bunch of cold stone ice cream.

The mimic gives you a radish, a very tasty radish.

I give the mimic a genie lamp.

The mimic spits out a lava lamp shaped like Robin Williams.

I feed the mimic a copy of Harry Potter in Latin.

The mimic gets confused in translation, and spits out a pot covered in human hair.

I feed the mimic a trebuchet

The mimic lays siege to the castle, then spits out an army of tiny rock elementals.

I feed the mimic peanut butter-filled pretzels.

The mimic digs out the peanut butter, then spits out the crushed remains of the pretzels.

I feed the mimic a time machine.

The mimic accidentally becomes lost in the space time continuum and ends up coming out a magic time god. The game is now feed the Chronomimic!

I feed the Chronomimic a gold stopwatch.

The mimic literally spits out H.G. Wells.

I feed H.G. Wells to the poor mimic