Thats a cool little 25-35 dollar computer, think of all the applications, sure you could use a regular computer to do stuff but a portable little computer you can hook up to anything and have it do things? That's just awesome.
The other week when I was in FL fishing, we had baitfish, salt water baitfish, one of the problems for the baitfish is if we get to far inland then the baitfish would start dying becuase the water was too fresh. Then we was talking about how someone should make a saltwater/freshwater notifier machine. You could do this with that little computer. Just mount it on the boat with a sensor and speaker and make it talk saying "Hey! It's too salty, the baitfishes are going to die!"