Just know that whatever one you get is the one that they are probably going to shoot the most rounds through of any gun they'll have for the rest of their life. I'd make it a nice one so 60 years from now when they are looking at it it isn't another WalMart antique. You mention a CZ Trainer. Probably hard to beat that one. I think those have a hooded front sight though. I might think of finding something that matched what they were going to shoot on other other platforms down the line. i.e. why get really good and comfortable with that setup if its the only gun you'll ever have like that? Maybe even get your names etched into a butt plate or something for a memento factor. You might want something with a threaded barrel too. I thought I read where the boyscouts shoot alot with suppressors. It'd just be a threaded cap on the end without one.
If I was in your situation I'd probably be looking at a Ruger 77/22 for the reasons mentioned above. They are bolt action, have open sites, scope mounts, and you can get threaded barrels. They have wood stock ones or synthetic stainless ones. I like open rings for open sites and a scope above. All the experts argue with that though. Then on down the line he can have a whole collection of Ruger M77 calibers. Ruger M77 22-250, Ruger M77 308, Ruger M77 7mm, M77 .243, etc etc etc...
These look interesting. Kinda go along with the theme but not sure I'd start anyone out on a lever/hammer gun though.
https://www.henryusa.com/rifles/salute-to-scouting-edition/https://www.thegunvaultstore.com/ri...n-philmont-scout-ranch-rifle-lever-22-20https://www.cheaperthandirt.com/hen...stock-blued-h004sts/FC-619835016348.htmlJust my random thoughts this morning. Good luck.