Really? Where can one get them?
At least one Freeper sells them, but only in quantity, I believe. (would be great for a group, I suppose!):
https://freerepublic.com/focus/f-chat/3712637/posts
But, they are available singly from many retailers, including most tool supply and many farm supply outlets. A web search will turn up hundreds of sellers, if you choose to pursue it that far.
I think Wal-Mart has them..or they use to.
Vive la liberte’!