I've heard the verb "macgyver" used several times and googled it-

http://members.aol.com/ichilites/editions/july24.html

The word has positive or even laudatory connotations I feel, while "jury-rig" in my experience often does not, as evidenced by the alteration "jerry-rig".

I propose a new verb, to jordi-rig. Jordi-rig: to solve an imaginary engineering problem by reciting meaningless pseudo-scientific terms, pushing a button painted onto a piece of cardboard, and waiting for the computer animation team to draw our attention away from the bogosity of the whole scenario by dazzling us with special effects.

-CB