I suppose that, to some degree, the idea of being age appropriate applies to your gadget purchases as well as to your clothing and jewelry (though, I would submit that even conservative middle-aged people can wear wild colors and patterns on their gadgets that they wouldn't dare put on their bodies). So, at first glance, Laptopmag.com's article Are you Too Old for That Gadget?" sounds like it might contain some reasonable (though probaby obvious) suggestions. I wouldn't recommend a pink Hello Kitty cell phone for a 50 year-old business executive, for instance, though it's none of my business if someone else decides to be eccentric in that way. But, take a look at some of the gadgets the Laptopmag writer thinks are too young for adults:

The Flip Video Ultra Series
Why are these beautifully colored, simple to use video cameras inappropriate for adults? So what if they look somewhat toyish -- they're supposed to look that way because they're fun and easy to use. What's wrong with a little payfulness at any age? The writer suggests that the black and white versions are "passable." Huh? I'm getting the lime green one (a color I'd never wear on my body, but which is my favorite on gadgets).