bricolage

Something made or put together using whatever materials happen to be available.

Hey, this isn't carpet, this is bubble wrap! Wait a minute, this house is a BRICOLAGE.
Some consider the Staypuff Marshmellow Man a mere bricolage of marshmellows.
Father tried to smile as the children woke him upl, presenting him with their ragtag birthday bricolage.
How DARE you call my sand castle a bricolage! I imported this sand from the beaches of the French Riviera!
Ahh, chewing-gum pie is undoubtedly the single tastiest culinary bricolage I've ever devised!!!