I had ordered some round magnets and the lettering was way too small so rather than order another set I decided to make my own using laser weatherproof vinyl shipping labels and some magnet sheet off of Amazon. I reused the round magnet for my SCCA class (I am back in BS) and made the other one out of magnet sheet. If they hold up I can make a DIY but even if they last only a season or two they were *way* cheaper than the commercial magnets. Thanks to Fred for giving me some starter Adobe illustrator files.