http://www.magnatag.com/page/MD/Mdsupply/die-cut-letter-number-magnet-set.asp - Magnetic letters and numbers are great for all ages. With magnetic numbers and letters, you are able to do things such as leave funny messages or clues for a treasure hunt. By combining magnetic letters with numbers, you can also write in text speak, to keep things shorter. For instance, you can use magnetic numbers to write something like C U L8R.