http://www.cleverscampcamp.com/keychains-light/

What are those little plastic photo viewers called that were wedding favors on keychains in the 60-70′s?
I remember in my grandparents house when I was little there were these little keychains they had that when you looked into the hole on one end and held it up to the light you would see a photo from the wedding party or other event…It has been driving me crazy trying to find out what these are called.
Also does anyone know if these are still made I would love to get some made for my wedding this summer.
Thanks
Not sure if they call them anything but viewers. Is this what you are talking about?
http://www.qlt.com/store/merchant.mv?Screen=PROD&Product_Code=K500B&Category_Code=200F&Product_Count=0
Edited to add: It looks like you can order either white, blue or pink. Do a search on their site to find the other colors (the link here is for the blue ones).
LED Keychain Light