one guy i knew carried around a large soft drink cup the ones with the straws and lid whenever he had to deliver a sack, pretty good idea, keep the cup in the cupholder in the car, even have it chillin in your room, but make sure your mom doesnt throw it away cleaning or anything. I usually just carry my pipe and nug jar in my pocket, thats them best place for me. PEACE
Id say the best place for weed is a pill jar(ibuprofin or something) and I bought a lockable box from walmart for 10 bucks, just incase they do find it, they'll have to go another step of opening the box(which they may or may not do.)
Do you got long hair? Hide shit in that, man. I totally doupt they'd check there. I can hide joints, small, lightwaight pipes, even 8ths. If you have a ponytail, its even easier. Put shit right above the rubberband, so all the hair holds it in. You can even put hair around a glass piece and tie it down with a rubberband.