Of course :) I made them myself. I created the picture on microsoft word and printed them onto photograph paper.
I then got some teabags (they are ones from starbucks in a stronger bag as I was worried actual Yorkshire teabags would rip!) with a string attached and glued the label end between the printed picture and a magnet.
I got the sheets of magnet from ebay and cut them myself.
And voila easy and cheap!