@DiverDn thats a great idea. I would either say a gift card, a tough system box, or a battery for their cordless power tools. Giftcards allow them to pick what they want but more storage is always nice to have for more tool storage and tough system is a great option because its modular. I don't know how many cordless power tools they got or how many batteries they got for them but as more and more things go cordless, more batteries will be needed. Seems like there are regular battery sales/deals for many of the popular tool brands. Might be able to find some for $100. Another option for 3 guys in their 20's is a nice home cooked meal. Hard to go wrong with food.