The Scratch Calendar by Agustín Zea of Mr. Tom Design uses the material found on lottery scratchers for a fun and interactive way to keep track of the date. As each day passes, just scratch it away with a coin.

I’d one-up this design by hiding little fortunes, quotes, designs or affirmations beneath the scratched-off design to add some extra pizazz. After all, most of the fun of playing lottery scratchers is seeing what prizes are beneath them.