I'd go with Darn Tough socks. They have a cult-ish following and last for eons (lifetime warranty).
Other ideas:
This lantern: https://www.rei.com/product/112760/b...9007_a1066c661
Kan Jam: https://www.thegrommet.com/gifts/him...ying-disc-game
Bottle Cutting Kit: https://www.thegrommet.com/gifts/him/bottle-cutting-inc