A buffed up and sandblasted aluminum L-13 could be an eyecatcher next to a bunch of ho hum white fiberglass. And since it is not meant to fly, you could strip off some of the skin, show the bones and the working control linkages. If I were a kid, I'd want to see the guts. Heck. I still want to see the guts. Put some LED lights inside and some little plexiglas portals for the kids to peer through.

One good thing about this project is that you don't have to feel bad about ruining a perfectly good glider.