I saw something on pinterest about doing a hand-made advent calendar with things to do each day instead of the ubiquitous chocolate. My children are dairy-free, so they can't have a chocolate advent calendar, and this seemed like a nice idea to do instead.
In Ikea, I bought a set of 24 little paper bags with number stickers from 1 - 24 included. I bought some cheap wooden pegs in the pound shop and some nice christmas ribbon on eBay. Charlotte stuck all the stickers on the pegs, Emma unfolded all the bags and I attached them all to ribbons tied between all the curtain fixtures.
I found a nice Christmassy font, and printed out a thing to do for each day. Some are dates that are already arranged, but others may get moved around depending on how I feel on the day! The idea is that we all do the activity as a family and it makes sure we don't forget any of the things we love to do in the run up to Christmas.