I made an advent calendar 5 years ago and despite requests to start selling them, I could never get them into a sensible time frame or budget. This year the discussion of advent calendars came up again and I decided to take another shot, this is how I would make a calendar now. The handles are made using wooden push pins (they need trimming), the doors are hinged by the wall sections and they rest upon the verticals to stop them being pushed in too far. There is enough friction in the hinge to keep them open during use. Obviously I've missed most of December now but I'll draw up the full 24 door version so I'll be well ahead for next year.