Unfortunately not as I haven't begun to put them together yet. I stole the idea from a couple of subscription services I saw advertised on Facebook though. The kids ones had a book and some little toys in, the adults ones had books, socks, chocolate, teas, and little bits like that to get all comfy to read. Some even had a travel mug.
If I combine them as their Christmas eve box then an example would be that ds5 will have new pjs, some chocolates (probably buttons or festive friends biscuits maybe) Tom Fletchers new Christmasaurus picture book, a Christmasaurus cuddly toy, a dinosaur cup, dinosaur pop it and some little wooden dinosaurs.
Ds1 will have pjs, a book of stories from people who worked on spitfires in the war, a model Spitfire, a Spitfire mug, hot chocolate and some sweets. I'll probably add one more thing to his to make it a little more exciting.
Good luck finding stock of the sylvanian family house. I wanted them so badly as a kid, ds4 showed an interest a little while ago and I was all excited thinking I might get to play with them, then he never mentioned them again