For the first Home Academy of Moving Pictures (a video school for homeschooled kids in Airdrie and area that I run and teach) Pre-Production class I had the kids make a dolly! It worked out very well, wasn't hard to make, and is really nice. I used the instructions from an e-book I got for Christmas! I am really happy with how it turned out! The e-book is called Killer Camera Rigs That You Can Build: http://www.dvcamerarigs.com/ It even looks like it could hold a camera operator if I made a bigger one!