Of course, you have the best of intentions ... but occasionally a couple of the twelve pegs that ship with the BrailleBox might go missing. And if that happens, you won't need to buy a whole new unit; just a pack of twelve more replacement pegs. Or you could save yourself the trouble of ordering more pegs after they've gotten lost (and then waiting for them to arrive in the mail) and just pick up a spare set right now. And to make the deal even sweeter, your extra pegs come in a hard-plastic container that snaps closed for safekeeping, which is also great for holding any left-over pegs while you're making different Braille characters on the BrailleBox.