Aaron Zenz is an artist, author and illustrator. He's also the dad to six children. Together with his kids, the Michigan dad created a community-wide game of I-Spy.
Over the course of one year, Aaron and his children painted 1,000 rocks with silly faces and planted them throughout Grand Rapids, Michigan.
"Kids all draw, they all color. They don't give a second thought about it and it's actually one of those things that's unfortunately trained out of us as we grow older," Zenz said.
He and his children also entered the Rock Around Project in Art prize, the world's largest art competition, but unfortunately did not win.