How about some temporary tattoos?
You could look into buying some custom temporary tattoos with the RV-12 Logo--then the kids could put them on their face (or elsewhere) for graduation. Minimum order is in the 1000 range, so you could pass extras on to other Eagles Nest projects or pass them out at the Eagles Nest display at Oshkosh to create some buzz. (Might need Van's approval to expropriate their logo, though)