LOL... I understand... you can lead them to water and all of that...
As I was growning up, long long ago in a land far far way, my father was always putting together some model, whether it was a boat or plane of some type. My sister and I both would always watch and then later, go out with him and watch him fly or drive the boat around etc.
When he would go to a hobby shop, we had to tag along and usually we always tried to get him to buy us a hand glider or something... My favorite was a glider called the "Thermal D" and I can't remember for the life of me, who made the kits... we both enjoyed building them and they always flew great.
We were never lucky enough to be able to afford a Gillows back then... but that didn't stop us from asking. lmao
Well... here's to you getting to enjoy the build even if the son doesn't...