Here's one I did a few years back... Whacked the horizontal off a Birdi Krafty 25: removed the elevator servo and pushrod. Moved the c.g. to 15%, reflexed the (now) elevons 1/8" and went flying.
Used a computer radio for mixing, but one flight left the Pmix off, and it still flew! Had to hold a little stick for the surface that wasn't mixing but no big deal...
Did the same thing to a profile version of the Somethin' Extra after an inverted landing took the back end off. It flew fine also.
Photo of it in another thread here...