There’s a reason craft fairs pop up at area high schools between October and December: They can be huge moneymaking endeavors for drill teams, student councils and parent-teacher groups. The Keller High Indianettes, whose show is this weekend, aim to earn as much as $40,000. The L.D. Bell show also is this weekend. A newer fair is Dec. 9. Christie Panno, director of the Indianettes, said proceeds help pay for Indianettes to travel to events and competitions, defray costume costs and contest fees.