"Single Fare 3" takes populist art seriously. Over 1,000 people answered a call to look at a MetroCard not as a $2.25 transit pass, but a tiny canvas instead. Their efforts are on display -- and for sale -- at RH Gallery in lower Manhattan through the end of next week.

If you can't get there in person, a slideshow (mostly taken during the packed opening night) is below. The art can also be found online here, where it's also been helpfully grouped into categories (such as "put a bird on it," "let's get naked," and "city scapes").