The easiest DIY I've ever used is a contraption made from a cardboard toilet-paper tube or better yet, a paper towel tube. Cut a hole near one of the ends and stick an aluminum foil bowl in there. Voila! A homemade steamroller. Cover one end with your hand and toke out of the other end. Then release your hand to empty the "chamber" lol. They hit pretty hard too... Somehow when you're desperate for something to smoke out of alzheimer's is the last thing on your mind