Receive a free desk lamp from FreeDeskLamp.com.  The free products are given out to increase brand recognition from their advertisers.  If you don’t mind a small advertisement imprinted on the desk lamp, sign up.  In addition, if you provide email addresses for 3 of your friends, they’ll send you a free USB-powered mini-vacuum to keep your keyboard and workspace clean. 

If the advertisement on the lamp really bothers you (much to the dismay of the advertiser) you can always use a primer and metallic paint to coordinate with your office decor…but remember the advertiser’s name when recounting the story of painting to your friends.