I also try to be very prudent with resources and do much of what has been listed. A few different items:
As
@OneEyedDiva said, clothing that goes directly from the washer to line drying can be stiff and wrinkled. Running loads through the dryer for just ten minutes (Alexa reminds me) helps that. They finish drying on a pole or rack. Watered down Dawn dish detergent makes an excellent spot remover.
I concoct foaming soap using a small amount of clear, unscented dish soap and water. For bathroom sink soap, I also add a smidge of lemon or rose scented liquid soap. Kitchen soap remains unscented.
Love my Keurig, but hate the waste, so have been using refillable pods for over a decade. So much better for the environment and waaaay cheaper. I dump the grounds in the food and lawn waste bin, then rinse the pods and give them a swipe with an old toothbrush - the rinsing water I catch in a bowl to water outdoor plants.
I hit the library weekly for books and DVDs.
I rinse out ziplock bags for reuse. Even sandwich bags.
My husband is a really good fix-it guy and is able to repair most non-electronic appliances, gizmos, GK toys, etc.
Our family shares streaming and online news subscriptions.
I use a Brita instead of buying bottled water.
In the car I bring along my refillable water bottle or insulated mug (with hot coffee or tea).