Made dds an advent calendar each last year, put in things I knew they'd love and they went down an absolute treat. Was great fun to make and definately doing similar this year. I was thinking of making up a christmas puzzle (we love puzzles- mainly wasjig, usually have one on the go a few times a year) and then splitting it into 24 little sets so they can do a bit each day. Does that sound rubbish?? What is everyone else putting in theirs this year??