When you’re 60 years old and have reflux, the doctor prescribes Nexium. When you’re 60 days old and have reflux, you puke.If trails of spit-up follow you wherever you go, keep things tidy with Petites Frites burp cloths and bibs.These wonders are more than just your average mess-catchers. Made from a blend of organic cotton and lyocell (a sustainable textile), the custom combo is highly absorbent and quick to dry. Plus, the double-sided knit, in primary colors and earth tones, feels plush to the touch — be it baby’s chin or your shoulder.Teether blankies are made from the same thirsty material and embellished with natural maple wood rings and hand-crocheted shapes for safe gnawing and excessive drooling.And that doesn’t bite.Available online at petitesfrites.com, $12-$84.Photo: Courtesy of Petites Frites PLAYGooey Gobs and Squishy StuffWhat: Drop by for free hands-on activities with mushy materials.Why: If there’s one thing she’s good at, it’s making a mess. When: Fri., 10:30-11:15 a.m. & 11:30 a.m.-12:15 p.m.Where: Schoolhouse Children’s Museum & Learning Center, 129 E. Ocean Ave., Boynton Beach (561-742-6780). Museum admission, adults, $5; children, $4; under 1, free. Pre-registration recommended.EXPLORECoconut Grove Arts FestivalWhat: Check out work from hundreds of artists, listen to live shows, and stop for a snack at the Global Food Village. Why: If your tot thinks it’s too heavy a helping of culture, tempt him with trampolines and slides. When: Today, 10 a.m.-6 p.m.Where: S. Bayshore Dr., b/t McFarlane Rd. & Pan American Dr., Coconut Grove. Info at 305-447-0401. Tickets online at tickets.completeticketsolutions.com. Adults and teens, $10; Coconut Grove residents in the 33133 zip code, $5; under 13, seniors, and veterans, free.GIGGLEAlexander, Who’s Not Not Not Not Not Going to MoveWhat: You-know-who throws a fit when he gets wind of Dad’s new job. Why: That’s one heck of a temper tantrum. When: Thru Mar. 3. Sat., 2 p.m.Where: Actors’ Playhouse at the Miracle Theatre, Balcony Theatre, 280 Miracle Mile, Coral Gables. Tickets at 305-444-9293 or online at tickets.actorsplayhouse.org. Adults and children, $20.