Air tools

Alright, hubby is not a certified carpenter but i just don't understand why he has so many tools needed for carpentry. Few weeks we been to garage sales and guess what he bought another tools again. I don't know what he is going to do with it but i guess buying air tools is a men's thing. Anyway, Christmass is coming up and i am thinking to buy airtools for him or maybe for my father in-law as a present. I'm sure they will like it specially if i pick the good ones with quality and brands.