The process is simple. Cut up a poster board or card stock into equal sized cards. Mine are about 7" wide and 5 1/2" tall, but you can make them any size you want. Squeeze some glue in the shape of the number (or letter) you want on the card. Leave some space on the side for your child to hold the card down while tracing.
Sprinkle some glitter (or sand, if you have that instead of top soil, colored sand would be fun also) over the glue to completely coat the number. Shake off the excess. Put a little green dot at the "start" of the number, and put a red dot at the "end" of the number. Add some arrows to help guide their little finger, allow time for the glue to completely dry, and voila! Tactile number cards. Sparkly tactile number cards. My kid loves them. Sure, a few pieces of glitter fall off now and then, but it's so worth cleaning up a few specks of sparkles to have her excited about something. I only made through five, but I guarantee I'll be making the rest of the numbers and later the lowercase and capital letters on different colored poster board.