Not all green ideas are as grand as converting your house to wind power. Sometimes small, simple changes can make a huge difference. Example? Tupperware. Yeah, I’m talking about the stuff your mom used to buy from her friends in the ‘80s.

Bring it with you when you go out to eat. By bringing along your own reusable container, you’ll save an aluminum, cardboard or Styrofoam box each time you bring home leftovers.

You can also take Tupperware with you when you go to the farmers’ market or the grocery store. You’ll eliminate the plastic bags you’d normally use to hold your lunchmeat or your apples. Since the deli weighs your meat by the pound, just ask them to print the label for you, and you can stick it on the side of the reusable container. If this is too geeky for even you, at the very least consider transferring your produce to airtight containers when you get it home. It will make your food last longer. Sure you could compost your rotten tomatoes, but wouldn’t you rather save a little money by making them last longer?

Worried about looking like a dork toting around your Tupperware? Too late. You’re already a dork. You might as well be a green one.

The Tupperware site has even more sustainable tips. Take a look!