i dont think you need to be a enginer to come up with that haha. why dont you design septic tanks for playgrounds so little kids can take shits?
that looks really solid man. if you want instead of using tinfoil for a bowl make a little cone out of a soda can with a medium sized hole in the bottom. then just go out and buy a $7 glass stem/bowl so you don't get crazy foil fumes
haha i love engineers my buddys going to arizona for his degree right now and whenever we kick it he always has some type of contraption ready to effect the quality of our highs (for what its worth its never better than a good glass tube but its fun, haha)
When making Ghetto bongs you have alot more freedom to try out things with the bongs, than with glass, so it allows alot of creativity. You can make some pretty crazy Ghetto bongs for really cheap.
yo find something better to use as the bowl, foil is so bad. I do love that you made a little ice catcher contraption to cool it off tho, that would be nice to take a hit out of