Glass Hammer Bubblers are great portable sized pipes that have no real threat of falling over. Hammer shaped bubbler by GogoPipes have creative designs similar to a hand pipe only instead of the mouth piece arching up it stick straight to the side making the bubbler look like a hammer. These pieces are a great alternative if you do not find the shape of the regular pipes appealing. Take a look at our list of hammer bubbler. Use water for smooth draw.