Well here's something fun and new, origami nail polish bottles. They were designed by Leyla Torres, author of the blog Origami Spirit. You can find the tutorial to make the nail polish bottles on her site, (click here). Besides their cute aesthetic, these nail polish bottles open up to reveal a nail polish brush. The cap even slides on top of the bottle!
Pictured above are a couple bottles I folded. They're very easy to fold but take a little time since there are two pieces. Once you have the steps memorized, I'm sure you could whip them up in no time.