Wi-fi detector shirt at Think Geek

Even if your Dad isn’t a geek, these gifts might still beat something more traditional.  Who could resist a working wi-fi detecting t-shirt? (The electronics can be detached for washing.) Find it at ThinkGeek Apparel. This way you don’t have to walk around with an open lap top while balancing the sloshing coffee cup and whatever else.

Or if you want an old favorite that’s been updated (and who wouldn’t?)  how about a USB Pet Rock. It plugs in but doesn’t draw any power, doesn’t talk back, or have shiny lights. Very zen, very green.