I am having trouble finding gifts for my young guys ages 13-15 who are in the wedding. The adult males, I found stainless steel whisky balls for them. You freeze them and put them in your whiskey instead ice cubes to avoid watering down your drink. They even come with their own holder in case they want to use them at a friends house watching a game. They pop them in the holder and into their friends fridge. Perfect guy gift that they will use. Now for the junior groomsmen, I want something as equally useful, but age appropriate. Any suggestions?