Maybe some radio/SDR related applications?
The team at krtkl (pronounced “critical”) is crowdfunding Snickerdoodle, a $55 hybrid development board that has an ARM application processor with an onboard FPGA. It is programmable from a cellphone, has 230 general purpose input/output pins (GPIO) including ground pins, and might just be the next big thing for Makers in the embedded computing community.
http://makezine.com/2015/10/12/snickerdoodle-dev-board-fpga-arm-processor/