I do many painting and craft projects, both inside and outside. Each spring, I pick up 5 or 6 plastic shower curtains from the dollar store. You wouldn't believe how many uses I've found for them. They even come in clear, to cover drafty windows in the winter!
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I bought a 99 cent shower curtain, mostly because the pattern/color was so right - and 10 months later it's still going and we are thinking of packing up. So a word to students and other transients - maybe the cheap colorful version will do you just fine for as long as you need it.
Instead of paying big bucks for mattress cover for your kids that will get ripped or so nasty it is easier to trash than to save, try this. Go to your local dollar store and purchase a dollar shower curtain liner. Just stretch it over the mattress and tuck under.
Got an old shower curtain liner? Make baby bibs with it and save big! After sterilizing with diluted bleach, cut a rectangle slightly longer than would fit your baby depending on age, with a slight dip on the top edge for the neck.
Now is the season for outdoor parties, graduations, etc. Instead of using paper tablecloths, use shower curtains from the dollar store.
Using two shower curtains, instead of one, makes your bathroom look pretty opulent. I use two (of the same pattern/colors/design), and they gather up nicely and look better than just one flat one. I try to find inexpensive ones, of course, and fabric curtains work best.
When you get a new shower curtain, if there's nothing much wrong with your old one, keep it. It can be used as a drop cloth for a painting project.
I use old shower curtains to put in the back floor of my explorer for my dogs for when we go to camp and they get very wet. To clean, I just take it out and put it a on clothes line and rinse with a hose.
My clear plastic liner is getting to be pretty disgusting so I'm going to replace it. I'll go to the Dollar Store and buy a new liner and clean the old one on the driveway and save it for drop cloths and such.
Decorative shower curtains can often be purchased much more cheaply than drapes. This choice for window coverings allows you to change your "drapes" more frequently.