The sack is made by a British company called Harrow & Green . It turns out this must be a British tradition because every vendor I found is located in the UK. As I made the final clicks to complete my order I was shocked by the fact that the cost of the bag was the same as the shipping $30! So, I decided to look for other options.
Of course, Etsy was the first place I looked, and I was lucky to find a number of choices. I ended on this one, also from a British vendor, called Scriptingle. The total cost with shipping was only $35 with shipping!
I can't wait for it to arrive and for the Mini to enjoy this Christmas tradition for many years to come!
