I clip newspaper coupons (2 papers each Sunday, 4 if there are 4 or more inserts that week). My neighbor and I trade inserts after we are done clipping, so we can have the ones the other didn't want.
I also belong to
FC's Coupon Club, sending in coupons I don't use and getting coupons that I can use in return.
Stores in my area have recently started accepting internet-printable coupons. I am not so up on those, since it's only lately that I have been able to use them. A source for many printable coupons can be found at
Ultimate Coupons Printable Coupons page.