I glue-gunned some small plastic dinosaurs to some small hair clips and put them in his green hair! They lasted the whole school day and Talon came home telling me how "awesome" his friends thought his crazy hair was!
(in hind-sight I would have spray-painted the clips green so they would've blended better into his hair, and possibly used smaller clips! Next year Talon is already asking for blue hair with ocean animals clipped in!)
Linked this idea to Hi-5 Friday at Fun on a Dime