The YEI Student Venture Incubator provides affordable office space to eligible Yale student startups. The Incubator is located in the YEI office conveniently located near Yale’s Central Campus and the Broadway shopping district.
Startups in the YEI Incubator include:

YouRenew.com is a website that helps you buy and sell electronics. It removes the traditional hassles associated with selling your devices online including giving your credit card information, setting up an account and waiting a couple weeks. It takes only two minutes to get an offer price to recycle your old devices. Ship your device in for free and get paid by check or PayPal.
Founded in 2008 by Bob Casey (YC’11) and Richard Littlehale (YC’10).

PaperG is an advertising technology company that automates local ad creation, sales, and management for local online media. Its goal is to simplify local online advertising for any sized publisher or advertiser. Products include Flyerboard and PlaceLocal. Partners include Hearst Newspapers, Boston Globe, and mtvU.
Founded in 2007 by Victor Wong (YC), Ka Mo Lau (YC), Victor Cheng (YC '08), Anna Yu (YC '08), Susan Liu (YC '10), and Roger Lee (Harvard '08).