Nearly 300 fans came out to greet Boston Bruins captain Zdeno Chara when made an appearance at BJ's Wholesale Club, in Waltham on Friday afternoon. Chara happily signed autographs, spoke with his fans and donated to a pajama drive sponsored by the Cradles to Crayons organization. The organization's aim is to give all of the PJ's donated by Chara and his fans to for children in need throughout the state.