What do you do with a broken body board and the wheels of an office chair? Throw them away? I don't think so. I cut an opening in the bottom of the board and inserted a piece of plywood cut to fit. Then attached the office chair in roughly the center with a few bolts. Some tape over the opening and it's done. Put on a helmet and take it to the top of your driveway or somewhere safe and have fun.
Disclaimer: This toy is fun but also dangerous. My kids love it, but my wife hates it. You can't steer, it's spins you 360 degrees and is prone to flip. Enjoy!
Here is a little clip of it in action