About four weeks before your work date, schedule appointments to wash church members’ windows. Charge about $2 per window. For safety, have the kids wash only first floor windows. Form groups of four. Have each group provide 2 buckets, a large sponge, a squeegee, a small ladder, a small bottle of dish-washing liquid and rags. Divide your appointments into work assignments. Each group can do six to eight houses in one day. Have kids wipe windows with slightly soapy water, rinse with clear water and squeegee the water off.