Medium walnut ply – all the pieces are on the sheet - the moose doesn’t quite fit so should move that to another piece and you probably have to rotate the board a bit to fit all in. The kerf for the box and holes are for walnut so I wouldn’t pick another wood. Slide the church doors closed in the slot and put the nativity behind it. On the 24th, slide the church out, take off the doors and put church back to reveal the nativity.
Medium basswood ply - I did the squirrel in cherry ply - but you can pick another wood. The ornaments are set up in such a way that you can print front and back. First set the ornaments to engrave (including 3 errand ornaments), hat to score, rectangle to cut. Set the rest to ignore. When done, without moving the sheet, flip over the rectangle to the back, and set everything you did to ignore, circles to score, numbers to engrave, and the last cut step that will cut all the ornaments. If all is well the circles and numbers should be set perfectly on the back of each ornament.
Thick basswood ply - I tested the posts for the ornaments with the holes in the tree so they would be a good fit, not too loose so they’d fall out when you walk by.
I’ve made a few over the years.
This miniature one is fun: http://www.paperminis.com/dollhouse-scale/festive1.htm. Scroll down a few kits till you see it. A quarter would look big next to it! It has pride of place in my Christmas dinner miniature room box.
Many years ago I won 2nd price for coming up with an advent calendar for the HP color laser printer contest. Darn - not good enough for the big prize (laser printer)!
You can use maple for the ornaments. The posts are critical - if you have another thick ply, test it first so you have a tight fit. It took me about 6x tries to get it just right.