I'm looking for easy, everyday habits, that don't require you to spend extra money. If all the supermarkets around you that you can afford charge twice the price for veggies not wrapped in plastic, just buying the naked veggies might not be an option, but there are still things you can do - that are the kinds of things I am looking for!

Here are the ones I came up with:

• If I scrape down the sides of the yoghurt container before putting it back in the fridge, it seems to keep much longer before it might mold.
• You can revive limp leafy greens: Wash them, cut away any actually bad parts, and put them in a bowl of cold water. Leave in the fridge overnight, and they will be nice and crunchy again.
• Since I struggle a bit with making a lot of impulse purchases, where possible I'll set myself a reminder for in a week instead of buying the thing immediately. If I still want it after a week, I can buy it.
• If you have the option, hang your clothes to dry instead of putting them in the dryer. They will wear down slower, and you save a bit of energy.
• My roommate and I use a digital shopping list. That way, we don't buy the same item twice and only buy what we need. It's also very convenient to put down the item as you use it up.

What are your small, free habits?