Sprucing Up your Office Space?

I've been coming up with creative ways to make an office space look nicer. I've come up with these rocks that I paint which I call 'Joy Rocks'. They're really beautiful and I've been putting them online on Etsy if you'd like to give them a look. They're only six bucks! Humor me as I shamelessly plug my creation.

What do you do to make your space less drab and more zen? Feng Shui?