Eric Williams, 48, is founder and creative director of the 20-year-old Silver Room,an eclectic boutique that offers locally made custom jewelry, T-shirts and hats, and features art exhibits, storytellers, musical events, and art and wellness classes. Williams also is the force behind the 15-year-old Sound System Block Party, on tap for July 21 in Hyde Park. He lives with his daughter, 9, in Bronzeville.