After having 6 of her teeth removed due to poor enamel and cavities (bless her) I've decided to avoid the chocolate advent calendar for my DD2 this year. Helpfully, the only one she wanted would have been a Hannah Montana one and that is unavailable anywhere.
On here I found a link to the Playmobil advent calendar that makes a Christmas scene and she is excited about having that one. A bit pricier than a couple of quid for the choc ones from the supermarket, but much nicer and can be used again and again.
Thanks to whoever posted the link.