I was looking for something to do with the kids. They raved about how much fun the rocket launching was at Maker Faire, so I brought some of that fun home with this kit, which is based on Rick Schertle’s project from MAKE Volume 15. The kit is an easy build, one or two hours total, and the rockets go amazingly high — so high I could barely see them anymore. I guess that’s high enough! The kit includes Rick’s article, all the electronics, and the PVC parts cut to length. All you need to supply are a few common tools, glue, paper, tape, and an air compressor or bicycle pump.