D-Link DSD-150 Internet Security Adapter
 

If you have memories of TV commercials from the 1960s, you perhaps remember the commercial for a combination clock, radio, and reading light. In the commercial an actor "invents" the combination product by taping together a clock, a radio and a reading lamp into a single unit.
D-Link's Securespot DSD-150 is kind of like that, only it combines a firewall, subscription-based virus and spyware protection, spam and popup blocking, parental controls and more into a 3.5"x3.5"x1.125" box.