From left: Sabrina Moore of Clifton and her sister Tamara Moore of Greer, S.C., melt buckets of beeswax and beef tallow for their candle making demonstration in the annual autumn market fair at the Claude Moore Colonial Farm, where they help their mother run the chandler booth. It is one of several activities for visitors of all ages Oct. 21 and 22 from 11 a.m. to 4:30 p.m. at 6310 Georgetown Pike in McLean.