- Must be reusable or recyclable. One of the things that always bothered me was the waste involved in advent calendars. If I'm going to make one and take that much time and effort, it better damn well last more than one holiday season. Otherwise, if I can recycle it fully, so be it.
- Must be able to hold good chocolates or small toys. None of that "heartwarming picture behind the little window" crap here. And by good chocolate, I mean good chocolate. Truffles, Lindt balls, etc. There will be no cutesy Christmas-shaped chocolates unless they are exquisite to eat as well. Toys would mean it's adaptable to children who should keep their mitts off my good chocolates.
- Must not involve more than maybe 30 minutes to 1 hour to assemble, barring standing in line at the craft store during the holidays behind that woman who has 15 different silk plants, none of which have tags, and who wants to haggle with the poor cashier. Go shopping in May to make this stuff, I tell ya.
- Must be easy to assemble. Not Martha-easy, I'm thinking more along the lines of "developmentally challenged monkey" easy.