Fresh from this year's Outdoor Retailer expo comes SteriPEN's new Sidewinder portable water purifier. You can leave the batteries at home on your next trip, as the Sidewinder only needs a good cranking to power its germ-killing UV bulb.

Let's get a rather important fact out of the way first: it's just a concept. Little boys reading this should cross it off their list to Father Christmas now, before their hopes rise even higher.

First law of gadget recessionomics: Take something you make, which is great, make it ever so less great, and sell it for ever so less money. That's how you end up with products like Microsoft's SideWinder X4 keyboard.

Microsoft's last SideWinder keyboard had a neat parlor trick: It split in two. The X4 has a little less pow—its main feature is anti-ghosting for cheap, letting you press up to 26 keys at once for $60. [Microsoft]

Microsoft's SideWinder gaming mice get more homogenized every release: The $40 X3 looks normal, almost boring, more Clone Wars than Darth Vader. It's got 2000DPI, on-the-fly switching and a single thumb button (WTF). [Microsoft]

Gamers have avoided wireless mice like girls with cooties, fearing the grim fate of death and teabagging induced by milliseconds of lag. Razer's Mamba and Microsoft SideWinder X8 promise total wireless freedom, sans teabagging.

A wireless mouse is blasphemy for most gamers-Logitech's got the G7, but Razer won't go near wireless-so naturally, that's exactly what Microsoft's revived, genre-busting SideWinder is doing with the X8. Not only is it wireless-using a 2.4GHz connection, like the G7-it escalates the silly DPI arms race, taking it up to …

Is Microsoft continuing their SideWinder brand revival—started with a mouse—with the release of a keyboard later this year? Perhaps, but this SideWinder X6 seems to be a pretty interesting keyboard in any case. It's got red (perhaps glowing?) keys, a detatchable num-pad, programmable buttons and TWO gigantic knobs on…