Yesterday afternoon we made anemometers. I wasn't even sure what one was until last year when we made them in science. The kid really enjoyed making them.
I am fairly sure you can tell from the picture what supplies you will need and how to put it together but if you can't let me know and I will provide step by step directions. I think the trickiest part was making sure the cups all faced the same direction.
Since we have been working patterns I had the student make a pattern on their card stock strips prior to gluing the cups on.