While walking around my local Goodwill a while back, I stumbled across one of those video game devices that you plug directly into your television. This one, though, was shaped like Pac-Man, had a joystick on the side and two buttons on the bottom (labeled 'A' and 'B'). I'd show you a picture, but I neglected to take one due to... me... forgetting. Just use your imagination here. Or do an image search in your favorite search engine.
I was at a yard sale recently and I found a Namco TV Game that was made by Jakks Pacific around 2003. It's a small device that easily fits in my hand, has a joystick and a fire button, and it looks kind of like a Ms. Pac-Man cabinet if you saw off the monitor, the marquee, and everything below the control panel. It also has audio/video cables built-in and runs off battery power, so you can just plug it into any handy television and start playing games.