This replica medical tricorder from Star Trek TOS is hugely detailed and looks pretty much like the "real" thing. It even comes with the removable scanner thingy. Plus it's got light and sound effects built-in, so you won't have to hold it over alien flu victims and whisper "widdlyweep... widdlyweep..." Mind you, I'm pretty sure that's what Bones used to do anyway— he never seemed to know exactly what was wrong with people, did he? With one of these and a bit of carpentry to construct one of those beds with the heart-monitor thing that went "thum... thum...," you could reenact the Enterprise medical scene of your choosing. Available soon for $39.95. [Geekalerts]
If they can get a version of this that I can plug in an SD card with old Star Trek episodes and watch on the miniature B&W tv in this sucker, then this would not only be geeky it would be —- nah, forget it. It would still be a useless item purchased only by people who have spent too much time watching Star Trek.
Still, given how ridiculous it looks, I bet this is a perfect gift for that forty-something Star Trek fan in your family.