What do you need the money for? Seed money, equipment, base expenses, trips?
Pop can drive, car wash, science day for elementary kids (have experiments set up as centers, nominal charge), silent auction. Many chain restaurants offer a percentage of sales on weekday nights and club members serve and bus.
Latin Club sells carnations before Valentine's Day, delivers hourly with note signed or anonymous. Boo bags sound similar and easy!
Just depends how ambitious you want to be.