Surprise: it's art!

Over the weekend, a friend of mine stuffed plastic eggs with mysterious, upbeat messages and left them around the city.

Meanwhile, in Birmingham, England:

"Residents awoke recently to find pianos spray-painted with the words "Play me I'm yours" scattered across the city.

The public invitation to tickle the ivories is the work of an art collective whose organizers say they want to create a sense of unity and wonder in a place where both are in short supply."

-All Things Considered on NPR, March 24 (read or listen to the full story - thanks, Letty, for the link!)

Inspired? Read artist and blogger Keri Smith's tips on how to be a guerilla artist.