theres nothing wrong with a cheap metal bowl. plus the magnet ones aren't obvious. me and my friends used to use the magnet bowls to toke up in the gym locker room in highschool. a metal bowl wont break, and usually you can get a couple and interchange the pieces. Plus, a little trick, you can usually put a screen inside the middle towards the mouthpiece and pack bud in there, then pack a regular bowl. great way to get some resin buildup on your bud. kinda gross though.