I like gravity bongs, chutes, all that stuff, but most people don't have them, because they are larger, or more complicated to use. Fun once in awhile though.
haahah my buddy made a crazy gravity bong with a milk jug. takin one of those full would be a fun game.
i use to take gb hits from one of those huge gatorade bottles back when i was a carefree stoner, cant do that shit anymore that is way too much for me now.