Big Trucks

• 9 to 11:30 a.m. Saturday, Ron Beese Park, 50 Rotary Drive, Barrington. Dozens of trucks. Compete in big wheel races, ride the trackless train and have fun on the inflatables. Free.

Used Book Sale

• 9 a.m. to 4:30 p.m. Saturday and noon to 4:30 p.m. Sunday, Arlington Heights Memorial Library, 500 N. Dunton. www.ahml.info/get_involved/friends.

Party in the Park

• 4 p.m. Saturday, Fabbrini Park, 1704 Glen Lake Road, Hoffman Estates. Multicultural entertainment, balloon artist, face painting, pony rides, trackless train, petting zoo, climbing wall, kiddie games, inflatables, contests, pickleball, children’s performer, live band. Admission is free, buy wristbands for games and activities.

USO Style Dance

• 6:30 to 9:30 p.m. Saturday, Historic Methodist Campground, 1250 Campground Road, Des Plaines. Falconaires Orchestra. Info: Al Tenutaat, (847) 207-5153; northshore37@sbcglobal.net; or facebook.com/falconaires orchestra. Tickets $10.

Day At The Park

• 11 a.m. to 3 p.m. Sunday, Hanover Park Park District, 1919 Walnut St. Free face painting and balloon artist. $6 wristband for Bounce House Obstacle Course, Penguin Fish Fling game and a Boom Blaster Carnival.

Car and Motorcycle Show

• Noon to 4 p.m. Sunday, Hanover Park Metra Station, 1975 W Lake St. Free admission. Fundraiser for the Hanover Park Community Resource Coalition.