Where can I purchase Clear Plastic Sign Holders?

I can easily find them online, but I am wondering where I could find them in like a generic store (i.e - Michaels or Menards). I am talking about the ';sign holders'; like you'll see in Restaurants and in Hotels usually lising specials or T.V Channels.





Answers much appreciated.Where can I purchase Clear Plastic Sign Holders?
I've found them at office supply stores, like Staples, Office Depot.Where can I purchase Clear Plastic Sign Holders?
I'm not sure where you live, but on the West coast the best place is Tap Plastics.
Staples!