You'd be best off making some bubble hash. Ummmmm. Soooo Goood. Basically water filtration.
Anyway go to
www.bubblebag.com I personally think they have the best product and a good description of how everything works. Although a little pricey compared to a homemade contraption (haven't had good luck with anything homemade the screen keeps fucking up with only a few uses, let me know if you make anything worth a shit) they do last long time if treated properly.
The hash honestly looks like some mud from a distance. I don't keep my car too clean (its fucking nasty) and one day was pulled over with some on me. Just threw it on the floor of my car, pig got out a dog, dog hit(?), pig scearched the car and found nothing. Just be sure to burn what you think it my be before thowing it in something to smoke.