This is a rocket my 7 year old designed in Tinkercad. It has multiple pieces that need to be glued together. It will also need a launch lug glued to the side. I let him do all the design work without correcting him. Consider it a work in progress. We used both an a8-3 engine then a c5-6 engine. A8-3 was not enough but proved it would fly relatively straight. C6-5 flew surprisingly well.