well one time i took a empty bottle of ibprufren the 1000pill size....stuck a whole in the side took the empty stem of a plastic pen took the metal part of a pencil(the part that holds the eraser) heated up one end of the pen stuck the metal to it the i headted the small hole i made in the bottle anstuck the pen threw the hot plastic helped with sealing then i just put a little carb on the side...perfect little one hitter...i was 13 when i made that..lol...