BICAS (Bicycle Inter-Community Art & Salvage), Tucson's bike co-op, celebrates everything bicycle at its annual art auction. This year's 20th annual auction features artwork from over 200 local artists—all bike themed. Come check out the piece at Art Gallery (1122 N. Stone Ave.) this Friday, Dec. 4 where the art will be on display and auctioned off the following night Saturday, Dec. 5. Support a local nonprofit, see some unique art and enjoy food and drink with the locals at this community event. For more info, visit bicas.org.