It'd be cool if you could include a tutorial for this. Maybe you already have. My kids would love this.

We have some. I think they will love this one: https://www.selfcad.com/tutorials/1s3t63r191s5g3e4h45712j4x1v2p5l406m6

There's also this one here. More complex than the previous one, but it shows a few more designing options: https://www.selfcad.com/tutorials/4d1q296e3g1e6f6g24s3c726z6m2p39e4m2b