I have a really bad habit of doing that too, and usually the best thing is just to distract myself with something else, especially if it keeps my hands and/or mouth busy. So I’ll go on Pinterest or Tumblr or read a book on my laptop and drink some water.
A lot of the time, I’ll have something small (an apple, a string cheese, etc) just to make sure I’m not actually hungry too.
They were a gift! I have no idea where they’re from. Try online :)