Rigged Up

A haphazard creation, made from unconventional parts or methods. A way of making something work, although it may be missing key parts.

"I only had a cardboard box and a box of adult diapers, but I managed to rig up quite a comfortable sleeping arrangement!"

"You know, from a distance, the carnival rides looked safe but, upon closer inspection, I noticed that they were rigged up with duct tape!"