Unless this is for nitrous lines this is a stupid thread to post. "Hey I'm a douchebag and do illegal drugs and want to hide them from the cops. I want to ask for ideas because I want you to think I'm cool because I need a self esteem boost which is why I do drugs in the first place."
This is gay and has no place on a car forum. Grow up. I'm surprised your screen name doesn't have 420 or 69 in it like the other immature douchebags.