Red Beer Koozie
Extra thick (and they float) beer koozies. "Camping without beer is just sitting in the Woods" is ridiculously not true, but is is very funny and on some days perhaps it falls closer to truth.
Regardless, we all use them when we're car camping or in the mancave and these have expression all their own. Can't think of what to get your guy for a gift, this'll do, this will do. Fill it up with your beverage can of choice.
Approved for Boundary Waters fun, but remember that aluminum cans and glass bottles are not :)