Are you sure you have 1/8th inch? It is usually 1/4" stuff, but 1/8" is good for making some easy and cool and very durable RC planes (SPAD, MUGI).
If it is really 1/8" I might mention it on rcgroups.com or some other rc group.
http://tinyurl.com/46tp2u
edit: actually 2mm is really popular, but you can do a lot with 4mm too. I'm sure plenty in the rc crowd would be interested as well.