I wonder how many of them are just collecting dust in peoples' desk drawers. We ordered two of the original ones for our office to play around with them, but only now, after 4½ years, I finally managed to find use for one as music player, after I decided I was too lazy to plug/unplug the speakers from my laptop.
I use them more or less this way:
-One for the TV, it lets me watch things that the smart TV can't.
-Three controlling my 3d printers with octoprint.
-Two on each car for recording video with cameras and GPS info.
-Three or so for controlling DSLR cameras and motors for panoramas, 3D scanning and so on.
They are extremely convenient for making things for other people(job or family), like prototypes, as I don't need to interface(or spend time) with their computers, I can just give them a computer!! all without breaking the bank.