There's not a whole lot of things that you can do with them... They won't push or pull anything and they won't lift anything.. At least nothing that has any resistance..
I do use one mounted upside down on a plywood base and with 2 "U" shaped brackets fastened in place of the fan blades I was able to mount a small doll cradle on top of the brackets.. I have the fan set on medium speed and start it with a motion detector. Last year I placed a small (34 inch ?) skeleton in the cradle....
I like the cradle idea also. I have used a ceiling fan motor in the bottom a 3x3 cage made with plywood, 2x2's and 3/4" pvc pipe for bars, the motor is enclosed in the botton and bolted a small piece of metal to one blade mount. I make the cage shake vigorusly with 3 different settings. I then put a life size ape inside of it. Great moving prop.
Olderthandirt, No there is no resistance. I forgot to tell you the cage hangs from a large tree limb and the motor is just thrown out of balance and makes the cage shake. I looks like the ape is alive and making the cage shake. I have the hands clutched around the bars.