There was this post a while back, where russian boys are having fun with themselves and with each other in a house. https://fansmine.com/TwinksandBoys/post/180857
A peculiar video, that seems vintage-ish, but I don't think it's too old, seems spycam, but now I have doubts. The boys are cute and handsome, though, definitely amateur and that's what's most important, regardless whatever it might actually be.
And now I share with you two more videos like that.
Nearly 3 hours of footage in total, pure amateur sex. Don't miss it! Enjoy!?

Boys cumming while being pumped from behind (premature, handsfree...)
5 clips

Italian footballer boys being spied on in the locker room

Handsome, cute Asian boys spied on in locker room (compilation) part 2
5 vids, around 15min in total

Handsome, cute Asian boys spied on in locker room (compilation) part 1
5 videos, around 26min in total

A real curiosity!
Soldier's common washroom is filmed secretly (lot of young and handsome guys, naked), somewhere in eastern Europe, maybe Russia (Soviet Union), my guess is: in the 80s (still communist era).
1 hour long footage