EyeToy

What it is: A tiny digital video camera that plugs into a PlayStation 2, Sony's video-game console. When used with EyeToy-compatible games, it captures a live video image of the player and puts it directly into the action onscreen. Instead of controlling play with a knob or lever or buttons, you control it by waving your arms, body, and legs.

The games: EyeToy Play 2 is a compilation of 12 games, some of which will probably appeal to preschool kids because of their simplicity (and silliness), while others are better suited to older children. Popping virtual bubbles, for instance, is easy enough for kids as young as 3, as is playing chef (chopping potatoes, smashing tomatoes) or wielding on-screen power tools (with help from an older parent or an older sibling, though some preschoolers won't get it or have the patience to figure it out). Games like virtual table tennis and soccer, are better suited to older kids, ages 6 and up.

Why it's cool: Though the games require some parental involvement at setup (focusing the camera, navigating the menu to reach the desired game), the action unfolds in a fairly intuitive manner. There are no buttons or controllers to master. Even young kids can get the idea of, say, poking their fingers around in the air to pop bubbles. And although the idea of being inside the TV and controlling the action is a little freaky at first, it quickly becomes fun. The play is genuinely active.

Price: $30 for camera; games are $40 or so without the camera. Requires a Sony Playstation 2 console, which sells for around $150. Buy it!