LOW COST PET CARE – Pet vaccines at the Low Cost Vet Clinic at South Suburban Humane Society, 21800 Central Ave., Matteson. No exam fee; no appointments; no qualifications. 8 a.m. to noon Saturday.
COMMUNITY GARAGE SALE – Grandpa’s Garage Sale in Lions Club Pool parking lot. 8 a.m. to noon Saturday.
STEM SATURDAY – Learn how macroinvertebrates affect the ecosystem. Forest Preserves of Cook County program at Homewood Science Center. 10 a.m. to 1 p.m. Saturday.
HOMEWOOD FIRE DEPARTMENT OPEN HOUSE. 11 a.m. to 2 p.m. at 17950 Dixie Highway. The annual event includes fun activities that help families learn about fire safety. Popular features include a live fire suppression demonstration and a visit from the UCAN medical helicopter.
SHOPS ON STERLING GRAND REOPENING. Nine unique shops and businesses offer refreshments and specials. 11 a.m. to 4 p.m. Saturday at 1056 Sterling Ave. in Flossmoor.
POP CULTURE POPCORN – Fourth anniversary celebration, noon to 7 p.m., 18035 Dixie Highway, Homewood.
A TASTE OF OPERA w/BEER – Get a taste of opera when Flossmoor resident Codrut Birsan, director of the Chicago Summer Opera, host a performance of three opera singers at Flossmoor Station Restaurant. 7 p.m. Saturday. $20 donation suggested.