Get ready for some pumpkin party hopping. Tomorrow, October 29, you can celebrate Halloween at any or all of three free, fun events in Boston. Enjoy trick or treating, crafts, and dance at the Hill House Halloween Party from 3-6pm (and spread the festive mojo by bringing a box of pasta, rice, or canned soup for their food pantry drive to benefit Boston families). Carve and decorate pumpkins and enjoy face painting and fall treats at the Fort Point Pumpkin Pageant from 12-4pm. And experience locally farmed pumpkins and apple cider at the Greenway Pumpkin Party from 12:30-2pm.