I home-brewed a two-piece dihedral wing for the EZ-Glider, wanting to see if the construction technique would be easier for my middle-schoolers than the notch-and-fold of the original polyhedral wing. It's constructed the same way the (for example) FT Sportster wing is constructed: two halves, taped and glued together. The results were good but the top of the Glider has a solid panel so it doesn't sit flat... yet.
And of course I forgot to take any pictures of it, and left it in my classroom for a 4-day weekend. Sorry.