• Ever fantasize about moving things around with your mind? Mattel is going to make that fantasy come true with the Mind Flex. This toy comes with a brain-scanning headset. Concentrate, and a fan spins up to levitate a ball. Relax your thoughts, and the ball descends. For a challenge, guide the ball through an obstacle course. Mind Flex hits stores in the fall for $80. • Nvidia, a leading maker of graphics chips for computers, will be touting $199 glasses that turn compatible monitors into three-dimensional displays, spicing up games like “Far Cry 2,” “Spore” and “Left 4 Dead.” The wireless glasses come with an adapter that plugs into a regular USB slot. • Stereo maker Blaupunkt will show what it says is “the first Internet car radio.” It's a potential competitor to satellite radio but needs to be connected to an Internet-enabled phone to receive audio streams. • TV stations will be at the show to present details of their plans to broadcast signals for cell phones, in-car sets and other portable gadgets. Transmissions could start this year, but it's unclear whether there will be any compatible receivers, particularly since the cellular carriers have their own mobile TV offerings. • Computer makers and their suppliers will be showing off ways to shorten boot times on computers, mostly by loading them with non-Windows software. Phoenix Technologies will be demonstrating an operating system that boots up in 15 seconds and comes with a Web browser. Users who need other applications can switch over to Windows at the touch of a button. • Intel will be showing a new version of its Classmate PC, a netbook for kids. It has a touch-sensitive screen that can be folded over the keyboard in a “tablet” configuration. • Lenovo will trot out a large laptop that looks as if it swallowed a netbook. It has a 17-inch main screen, from which a second, 10-inch, netbook-sized screen slides out. Price: around $5,000. • Palm, the maker of smart phones that has been overshadowed by BlackBerrys and iPhones, has promised a big announcement. It's widely expected to reveal a replacement for the dated software that drives Palm's Centros and most of its Treos. • Cisco will show off a wireless stereo system, probably something more sophisticated than the simple Web radio player its Linksys division has been selling.