Beyond fly them? Have you tried the single stir stick mod? Hot glue gun and a couple of coffee stir sticks/straws and you'll have a plane that flies completely different. Check the mods page for more info on that. In fact just check the mods page, if you want to build other craft from your gear it might be there. I have been considering buying a plane body from plantraco to put the aa gear on. Or you could sell them. I have some interest in all of that.

Tim