I just wanted to flag up some projects that you may be interested in making (esp if you have kids). My husband has been creating rockets and rocket launchers as well as cool stuff with Crayons. Have a look at his video’s and if you decide to make them then please do let us know how it goes!
1. How to make a PVC bottle rocket launcher:
2. Bottle Rocket Test:
3. How to make melted crayon room signs: