The following Kickstarter-funded projects all involve an adaptation of the popular and cheap Raspberry Pi, which just might inspire you to think of your own new application.
GeekRoo's Fairywren Mini-ITX motherboard
Some Raspberry Pi owners may feel this SBC (single-board computer) lacks the full functionality and features of a full-on motherboard. Rightfully so, as the Pi's development team had to trade off a slew of components and features in order to keep the cost low and conform to a small form-factor. The need for those features was heard by GeekRoo, a company that decided to rectify that problem with its Fairywren Mini-ITX motherboard. The board is designed so that users can simply affix a Raspberry Pi board to the motherboard with ease.
The Pi functions as the Fairywren's CPU as well as system RAM and GPU. There is space to install a 2.5-inch hard-drive, effectively upping the storage capacity of the Pi. Fairywren is also loaded out with a 4-port USB hub for connecting peripherals, toggles for both 5V and 12V output, serial port, and an IR module that can take advantage of a remote for media center applications. If that wasn't enough, GeekRoo even built in an XBee socket for greater wireless functionality as well as an Arduino UNO to control the board's programmable power switch and a host of other applications.
All of the hardware fits into a tiny case that comes complete with an I/O shield, giving the system a neat and tidy appearance.