THE PHANTOM TOLLBOOTH -- Today at 10 a.m. A bored child travels to a fantasy land in a mix of live action and animation from Looney Tunes creator Chuck Jones. The Avalon Theatre, 5612 Connecticut Ave. NW. $5. 202-966-6000.

DREAMOSAURUS -- Today at 11:30 a.m. and 1 p.m. Friendly dinosaurs help a young boy get rid of his nightmares. Glen Echo Park, Puppet Co. Playhouse, 7300 MacArthur Blvd., Glen Echo. $7, younger than two free. 301-320-6668.

SIDEWALK PAINTING AND ICE CREAM SOCIAL -- Today, 1-3 p.m. Ice cream social 3-6 p.m. Learn the art of sidewalk painting at the Museum of Modern Arf. Meet by the Clarendon Metro. 1116 N. Hudson St., Arlington. Suggested donation $5. For reservations, call 703-528-4800.

CRAZY CONSTRUCTION FOR KIDS -- Today, 1-5 p.m. Make model buildings with shiny construction materials after examining Frank Gehry's architecture in the exhibit "Symphony in Steel: Ironworkers and the Walt Disney Concert Hall." National Building Museum, 401 F St. NW. $4 per building. 202-272-2448.

IMAGINATION STAGE FALL OPEN HOUSE -- Saturday, 10 a.m.-3 p.m. Drama, dance and music workshops, plus hands-on art activities. Lerner Theatre, 4908 Auburn Ave., Bethesda. Free. 301-280-1660.