Back in the day I made a necklace out of something hemp-like,the kind with wooden beads eh, and I had this hollow piece of bamboo from a handmade chess set originating out of Argentina. It had caps on either end.Anyway, I fastened the piece to the necklace and carries joint and nugs in it, it held about two grams. Used to walk through high school wearing it and nobody knew wiser! Thought it might pique your interest because it's better than carrying it in your pocket!
Thats actually pretty cool, wish you had pics. I bought a heavy ass, expensive ass all metal mechanical pencil from my university shop. I used it all through college. I ended up taking out the insides until it was just a shell and now i carry it around with me with a jay inside. PERFECT!