This is a fun theme! As a frugal person, I would like to be able to accept new ideas and begin implementing them to help with our family budget. One idea that HAS NEVER worked for me is outside line-drying clothes. I have allergies (ok, major allergies) and line-drying outside just deposits all of the "crud" into the laundry which just intensifies my allergic reaction (or "which almost brings me to death's door" according to my husband). :)
The second idea (ok, I would like to implement this but haven't yet) is to use cloth napkins and kitchen towels instead of paper napkins and paper towels.