I’ve got 3dc. They all love Lego, especially younger 2, one loves ninjago, other loves friends. Oldest isn’t so obsessed, but fiddles about with siblings sets.
Is a Lego advent calender worth the £20. Is the box part of it? The bits on their own might not look like anything that should be linked together, do you display them in the box? Thinking the Lego city one. Can you reuse it next year?