Individually wrapped candies, plastic costumes that end up in the land fill, and large parties that make mother nature cringe are all part of the Halloween tradition. Until now. Tonight, the Ballard CoolMom group is hosting a workshop on how to make your Halloween a little more earth-friendly. The founder of Green Halloween will be giving tips on all aspects of the holiday including treats to hand out at the door and home-made costume ideas. The event is tonight (Tuesday) at the Ballard Senior Center (5429 32nd Ave. NW) from 7 p.m. to 8:30 p.m.