RJR posted:Gary, GRJ's picture and description make clear that he puts the magnet on the inside of the car's plastic floor. So when he holds the car over the trash can, and removes the magnet from the inside, the metals falls off. Since he uses a plastic car, it could also be washed. Believe me, removing slivers from a magnet can lead to some mean finger splinters.
In lieu of tweezers, rare-earth (neodymium) magnets work pretty good for removing metal splinters from your hands and fingers. Using any old tape to remove splinters from rare-earth magnets, not so good. Make sure it is VERY sticky tape if you want any chance at all of some results.
Common ceramic or alnico magnets are probably best for general O-gauge ferrous scrap pick up (like Train Room Gary and Gilly show). Far less dangerous in my opinion. If you never thought that simple little magnets could be dangerous, you haven't experienced rare-earth (neodymium) magnets! 
