Recycling. Here's what I reuse; what do you reuse?
Boxes (cereal, soda, etc) get turned into craft surfaces (painting canvases, as something to paint on so nothing gets on the table (I don't buy newspapers), turned into stencils, etc
The cereal sacks get turned into wax paper.
Plastic sacks become garbage bags, kitty liners, lunch sacks for hubby, etc
Twist ties get saved.
Tortilla and bread sacks get re-used for salads and sandwich bags.
I recycle leftover aluminum foil along with my cans. I also recycle tin cans.
That's pretty much all I can think of now.