Last year I posted the following notice with the caveat that I had found little to back it up, but another source has confirmed its truth (thank you). So here you go:
Altoona, Pennsylvania, and a growing number of communities in the Boston area celebrate Buzzlewitz Day on November 11. According to the Lowther tradition, Buzzlewitz is the elf that is sent by Santa to collect children’s Christmas lists. On 11 November of each year at 11 pm, children leave their Christmas lists and a snickerdoodle cookie on the mantle or in the kitchen. Buzzlewitz comes in the night to collect the lists. In return, he leaves a mint and an acorn.