These are the linup of small systems that we have been playing with. If you use a different one, add them here. If yours is in the same family as others, lets keep them linked.
Android
Beaglebone Black (Rev C)
Nexys3 Spartan6 FPGA Development Board
Raspberry PI Model 2B
Trinket Pro
x86 family, 32bit
x86 family, 64bit.