Meshu, a San Francisco-based startup, makes jewelry in the pattern of your Foursquare check-ins.
After you connect your Foursquare account on Meshu's website, you can choose to design a piece based on all of your check-ins worldwide, or by more modest regions (such as the U.S., or Miami Beach). You can eliminate any check-in spots to alter the shape to your taste.
When you're done customizing your piece, you can have it made into a pair of earrings, a pendant necklace, a large necklace or cufflinks. Finished products cost between $75 and $150 and come in four different materials (acrylic, wood, nylon or silver) and a small range of neutral colors.
If you're not particularly interested in having your Foursquare check-ins turned into jewelry, you can use the site's app to create your own connect-the-dots design, or shop a gallery of pre-made items that includes jewelry linking the locations of U.S. National Parks (above) and San Francisco neighborhoods, among other territories.