The Redfly turns your smartphone into a laptop. It doesn't have any processing power itself; rather, it tethers to a Windows Mobile gadget, giving you a full (if slightly shrunken-down) keyboard and a big screen to do your Office Mobile or Web surfing work on. Recently, Celio has been plugging it as a good option for large enterprises that rely on Citrix thin client applications, as there's a Citrix client for Windows Mobile that works well with the Redfly.

At its original $499 price, though, the Redfly cost the same as a low-end laptop or decent Netbook PC, making it really hard to justify for individual buyers. Celio earlier dropped the price to $399, but that's still in the ASUS EEE PC range. At $199, the Redfly really starts to look like a peripheral. (Thanks, Dieter.)