If NEM is ever ported to C, these $20 boards can be used for forging/securing the NEM network.

EK-TM4C1294XL Tiva C Series TM4C1294 Connected LaunchPad
http://www.ti.com/tool/EK-TM4C1294XL

http://www.ti.com/diagrams/med_ek-tm4c1294xl_clp-top-no-shadow-low_res.jpg