Get a Zebra pen, it's stainless steel so you can smoke out of. Empty that piece out, and flip the tip and put it inside the pen. So this makes like a one hitter. Then you put that bad piece in a bottle or whatevs, and make a shotty and you're good to go. This is of course better for by yourself or with good weed becasue it's a small bowl pack. Enjoy.
take that one hitter bowl thang...put a hole in the lid of a 2 liter soda bottle...fit the bowl snugly in the lid...cut the bottom of the bottle off. fill a bucket, sink, tub whateva full of water. place bottle in sink so it's cut bottom is resting on the bottom of the sink. pack yer bowl...screw the lid/bowl back on the bottle. light the bowl as you slowly pull the bottle up towards the surface of the water...you'll see the bottle filling with smoke...unscrew the lid/bowl...suck in the smoke as you push the bottle back down.....WHOA DUDE! you've just done a gravity bong hit...sit down til the wah wah wah effect passes. love you!
^ 4 sure. Make sure you light the entire bowl also, you can get one big hit and thats the idea of a gravity bong.