If you think sidewalk chalk is only good for hopscotch, you've got another think coming. Tomorrow, thousands of South Sound artists will descend upon Frost Park in downtown Tacoma at noon, turning its concrete into canvas for the opening of Frost Park Chalk Off Challenge Season 5ive at Ninth and Pacific Avenue. Witness unbelievable feats of illustration, and create some of your own. Be a part of history as Mayor Marilyn Strickland has proclaimed April 6, 2012 as "Frost Park Chalk Day." Rejoice in the movement initially started as a way for the community to positively "occupy" Larry Frost Memorial Park during their lunch hour every Friday - at least during the warm(ish) spring and summer months.

Then vote for your favorite chalk art through online voting on FeedTacoma.com.

[Frost Park, noon to 1 p.m., bring a sack lunch, feed a cupcake to a chalker, Ninth and Pacific Ave., Tacoma]