This is extremely simple and wont cost you anything. you'll need: ToothpastePlastic Ziploc Bag (has to be plastic!-thin)2Flat surfaces (i used small plexi- glass boards)=======================================================Soldering Iron ScissorsVentilation!
To begin with, i got the idea from http://www.instructables.com/id/Pocket-Full-of-Anything---evenToothpaste/ ---- Yes, I keep these in my wallet in case i need them :D, and I go to school.... How do I survive? I use these! I usually carry 3 if I'm in school , i take em out, violently try to rip it open and squeeze the goods into my mouth, then rinse out in the bathroom. :D