This so dang cute! A dollhouse-scale version of the Advent Calendar Shadowbox (albeit in a rectangular shape... note: this is just shy of 3-1/2" x 2-1/2" so about ATC size). 25 tiny cubbies around the edges (plus an extra wide space in the bottom center).
Also note the Tiny Advent Calendar Collage Sheet linked below with images to fit the center space and numerals for around the edges.
Laser-cut chipboard. Ships flat but a breeze to put together with the slots and tabs precut (you'll just need to secure with a bit of white glue). Also includes a tiny template if you're brave enough to make drawers for all those cubbies out of paper.
Teri Calia made a Little Christmas Cabin in the Woods (see the wide photo below). More info in the blog and/or see
the supply list.