I'll throw whatever is small enought to fit into a stocking and we don't usually shop for "stocking stuffers." Except ya know... bags of christmas candy.
This year he's getting 2 26pc wrench sets, standard and metric, one each

and a 23 pc screwdriver set, I spent less than $100! He'll be thrilled. I think I'm going to take the biggest of each (metric, standard, philips, flathead) and wrap those for his stocking.