Check out a fishing pole from a Chicago Public Library: With just a library card, you can check out a fishing pole and tackle kit for three weeks from a dozen public library branches across the city.
Kidical Mass bike rides: A riff on the Critical Mass rides that happen one Friday evening every month, Kidical Mass assembles families for leisurely weekend morning bicycle rides through parks and along residential streets in Logan Square, Roscoe Village and Lincoln Square. Helmets required, costumes optional.
In Wheaton, Catigny Park’s First Division Museum is one of the coolest playgrounds around for kids: it has 16 military vehicles, used from World War I to Desert Storm, to climb on: 11 retired tanks, an armored personnel carrier and four artillery pieces.
Family Twilight Adventures at Morton Arboretum include evening hikes, marshmallow roasts and tram rides through the grounds. July’s adventures focus on lightning bugs; in August the theme is flowers that bloom at night.
Northwestern University’s Dearborn Observatory: Kids will have stars in their eyes as they spot constellations through the historic 18.5-inch telescope here. Physics and astronomy students lead a tour and answer questions, then visitors take turns on the telescope for a look at the night sky.