Make a tinfoil sculpture. Donate your change to a cause you've never heard of. Write a love letter on a postcard and mail it to someone you've never met. Write a love letter on a postcard and mail it to yourself. Offer to knit a sweater for the neighbor's dog. Re-arrange the furniture. Put some bean sprouts in your peanut butter sandwich. Meditate in a sports bar.
Do something different. Make it fun. Make it kind. Mostly, just do something different.