A piano stool was the first thing I thought of too! Makes it much easier to play. You can try all sorts of things to get a child to stick with piano lessons but at the core they just have to want to do it themselves. It helps if they have someone else to play with - either on the piano or a duet with another instrument. There has to be a point to learning the piano, or else why bother? How about recital night once a week where you all play? I think, if you demonstrate enjoyment playing it yourself then that is worth more than any amount of bubblegum.

Coding is just another way of making things. We don't have time to learn how to make everything we use. Personally, I'd rather knit - Its social and relaxing. You learn arithmetic and concentration. You solve puzzles or set them for other people. At the end you understand how clothes are made and have something to keep you warm. Coding has similar claims made for its benefits, but it seems pretty dull in comparison. Fine for a job, but no way to spend your spare time - unless you particularly like maintaining websites.