I buy all my socks at once time and they're identical, so when one gets lost or gets a hole in it, I can just toss it.

I buy chicken in bulk, cook it and freeze it.

I do a lot of meal planning so I can use left overs in something else.

We drink mostly water, not milk or juice. I wash only on cold. We keep our cars until they fall apart. My friends and I pass down kids' clothing.