I know most of these have been said already, but these are what I do and it keeps us going
garden (we have one in the ground, containers on the patio, and plants inside)
chickens (ours are pastured on the back lawn, they use only a little feed)
learn how to repair/mend clothes, sheets, towels
hang dry laundry
walk, bike or bus as much as possible (we have not driven since June and saved a ton on insurance and gas)
cook everything from...