although a few people have said they arn't any indestructable planes, they're are, well kind of.

You'll probaly see them advertised as virtually indestructable, some are very good whereas others are useless. I wont mention the company but one company shows you their plane with what looks like a car running over it, on much closer inspection it is actually a car tyre, i've seen this crash and it aint great, nor does it look great even before it crashes, personally it is a poorly designed plane.

however

There are a few very good virtually indestructable planes. I can't remember the exact name of the company who makes them but it is a very good plane as i know a guy who owns one, i've also seen it fly. He was telling me about how he got a deadstick after exiting a very low manouver and basically he ended about 50ft above the runway with no power and at 0 airspeed. For some freakish reason it tail slid down to about 30 ft, flipped over and hit the ground pretty fast and hard. Apparantly the only thing needed replacing was the prop and reciever crystals, obviously he wasnt going to show me but he said that he's quite confident that he could hit it into the ground from 100ft and easily still be ok, just some minor replacements but he wasn't willing to show me and i dont blame him!

Anyway i saw it fly and as well as being virtually indestructable, it is a very nice flyer.

Look around some catalogues, you should be able to find a good one but ask around if you can.