Online advent calendars

Not strictly information literacy, but librarianly (compiled by, or for, librarians):
- Women's studies and women's history Advent Calendar: https://calendar.myadvent.net/?id=nt1kee5497mdo9efkzij7kqyil69xnum
- CILIP School Libraries Group Advent calendar (a recommended book per day) https://app.myadvent.net/calendar?id=yxr784ji6mvs3vhdcjuc5h4cbygrsfhg&door=0
- Library and Archives of the Institution of Civil Engineers Advent Calendar: https://app.myadvent.net/calendar?id=0v1xjxvptrj54dl1qnq0axltd5ufk2dt
Please comment if you know of others!
Also, the UK's Royal National Institute of Blind People (RNIB) has packets of braille stickers for physical-world advent calendars, to make them more accessible https://shop.rnib.org.uk/braille-advent-calendar-stickers-94913
Photo by SheilaWebber, taken in the 3D world Second Life: advent calendar; day one contained a jacket and jeans - in a virtual world an advent calendar can contain houses, plants and outfits!