The Middletown Senior Center is holding its annual holiday rummage sale tomorrow, from 8 a.m. to 2 p.m. at 21256 Washington St., behind Middletown Square Park.Proceeds fund Senior Center programs like Meals on Wheels and weekly classes. New this year is the Rummage Sale Café, open 8:30 a.m. to 1 p.m., serving organic coffee, teas, and baked goods.