If you're going to get him to do anything, dont do plumbing as it's a ****ing pain in the arse most days!
Every time I come home after having a bad day I tell my youngest son, “ whatever you do don’t take up plumbing “
He did come and help me during the summer as I had a job changing 20 rads and some other bits in an empty house, he was really useful.
He’s started college now doing A levels.