v. 1. To use ingenuity to fix or remedy a problem using only the tools available at hand. 2. To jury-rig
n. Someone who can regularly cobble together solutions to problems using only the tools available at hand.
Your CD playa broke, huh? Gimme that string, a pencil, and a sock, and I'm a MacGyver it.
Man, I be a regular MacGyver when it comes to making bongs