One mans junk is another woman's treasure!!
I love keeping containers that food comes in. For one thing they are great (when washed out) to give away as gifts filled with treats. This way you don't have to worry about getting your containers back and you don't need to spend a fortune buying containers so you can give them away as gifts.
This was my latest give away.
This summer my mother-in law catered and used cherry tomatoes for her skewers. When she was done with the containers I packed them into my bags to come back home with me. I knew they would be great for putting some short of treat in. For this gift I lined the container with wax paper and placed the chocolate frogs in; layering a piece of wax paper between the rows. Then to cover over the large cherry tomato label I cut a piece of card stock, used a stamp and signed the middle.
For more idea about being frugal check out Biblical women hood