HAPPENIN’ OTSEGO for THURSDAY, DEC. 21 Jewelry From Vintage Items JEWELRY SHOW & SALE – 5-8 p.m. Lynn & Dale Price display their rings, pins, & bracelets made from vintage buttons, bakelite, and coins. Oneonta History Center, 183 Main St., Oneonta. Call 607-432-0960 or visit www.oneontahistory.org CHRISTMAS PARTY – 9:30-11:30 a.m. Get the kids dressed-up in their holiday finest for this pre-school party. Bring a snack for them to share with their friends and parents too. Santa arrives at 10:30 a.m. The…