You can make a cash donation to a troop ... this is a targeted donation and it does not go to pay for National or International activities... only to the troop. By the way... most troops are run by Moms who are not into the crappola that comes from the National organization. They just want to give the girls a chance to camp, sing songs, cook on a campfire with a dutch oven... you know, the dorky stuff. Give them the cash and they don’t have to sell the cookies, nuts and calendars to earn the money.
That is exactly what I do. I generally do not want the stuff their selling, but I try to help them when I can buy just giving them cash.