We do stuff like this at my company too, here are some ideas of things that we've gotten
-Board games the family can play together. Nothing like a fun family night together which will create timeless memories. (Plus no additional cost to it) You can also get them things like popcorn or other snacks that hold for them to enjoy while playing the games
-Hats, gloves & scarfs. Despite being ok on clothes, those are small items that everyone can always use, including the parents
-With it being all boys you can't go wrong either getting them things like football, basketball, soccerball or other things they can do outside together. Again, no additional costs for stuff and the boys/family can spend time together playing with each other again, adding to good quality family time & time with friends too.