It’s 4/20 weekend. This bud’s for you.

GO
Creative Chicago Expo
What: Chicago creatives (music, film, fashion, theater, dance, visual arts, design) gather to participate in housing workshops and exhibits. Free to public.
Why: Expo-se yourself.
When: Sat., 10 a.m.-4 p.m.
Where: Chicago Cultural Center, 77 E. Randolph St., at Michigan Ave. (312-744-6630).

DO
Plan B Bar & Kitchen
What: New Wicker Park bar offers booze, eats, and grooves.
Why: Plan A fell through.
When: Opens Fri., 8 p.m.
Where: 1635 N. Milwaukee Ave., at North Ave. (773-252-2680).

LEARN
The View from the Ground
What: Conference explores the transformation of inner-city Chicago. Speakers include Alex Kotlowitz and Studs Terkel.
Why: Gain some perspective.
When: Fri. & Sat. Schedule online at eightblocks.org.
Where: The University of Chicago Law School, 1111 E. 60th St., b/t University & Ellis Aves.

EAT
Sundaes on Sunday
What: Kids 12 and under mob a bar full of gelato and toppings. (Don’t worry: Big kids can gorge, too.)
Why: I scream, you scream.
When: Sun., 4:30-6:30 p.m.
Where: Osteria Via Stato, 620 N. State St., at Ontario St. (312-642-8450).

SAVE
The Earth
What: Turn off a light. Leave your car at home. Say no to paper and plastic.
Why: You are the world.
When: Sun. (And every day thereafter.)
Where: Here, there, and everywhere.