Do you have a kitchen drawer full of unmatched plastic storage containers and lids of various sizes? Does it drive you crazy when you can't find a lid that fits? Take just a few minutes during your day (some time today) and organize it. It doesn't take long and it's so great when it's done.
Start by emptying the entire drawer and place like with like. Then match up as many lids with their mates as you can. Toss or recycle any containers that don't have mates, that are old and yucky, damaged, or that you have too many of. Take the lids off the ones you want to keep and store them vertically inside a gallon size Ziploc bag (unzipped). In the drawer, stack any containers you want to keep inside one another by size. Place the larger containers on the bottom of the drawer and in the back. The smaller ones go in the front and on top where they're easy to see.
If you don't want to mess with any of this and you'd rather start fresh (especially if your containers are old and stained), go out and purchase a new set of matching plastic containers with just the right number and size of containers you think you might use. If you end up getting too many, no problem. Just find other ways to use them in your home. They're great for storing many things.