We saw a more pragmatic response to the do-not-touch problem in a Franz West exhibition at the MMK in Frankfurt. West was a passionate advocate of audience participation and in this exhibition (despite some collectors fearing the worst and not allowing their works to be handled) there was a significant opportunity to be part of the West experience. Sculptures to sit on, works to spin around, objects to slip over the arms (or if you were really up for it, the head) and wave about and a small sculpture that you could wrestle to the ground as one member of a school party did while we were there.
All this was made possible by the good will of some collectors and the use of exhibition copies of what Franz West called his adaptables. When you think about it, if you can make entirely new sculptures after artists die it's not too much of a stretch to create exhibition copies of works(with the artist's ok) for visitors to play around with.