If you don’t have access to a propeller (propellor), this is a great way to make one out of common materials. It is at the ScienceToyMaker Web site run by Slater Harrison.

I noticed the plane he was using with his DIY propeller is a Squirrel. 🙂

I noticed also he is showing another mechanism designed by Prabhuraj.C.U of india is using a foam Squirrel plane as well.