Looking for the perfect present for that techno geek in your life? This year's guide has plenty to choose from, including a bunch for the socially conscious in search of green tech that helps curb energy usage, cut down on paper pollution and clean up—sans toxic chemicals. The guide also features innovative uses of technology to provide basic services such as water, sanitation and light to areas that lack them.

First: Here's a look at some of this year's high-tech toys, including those that let you watch movies, play video games or pretend to fly an airplane in your own little (virtual) world, or just kick back on a floating chair.

High-Tech Toys Slide Show

See also this year's:

Green Gadget Slide Show

Showcase for Socially Responsible Inventions