Here are a few more Christmas Advent calendars you might enjoy looking at (maybe, even making!). The nicest ones I've come across seem to alll be from Europe - Germany, Spain, Netherlands. Anyway, here they are.

Germany

Each of these 24 little boxes measures 6 x 6 cm. They are shown hanging on a tree branch. You can easily cluster them on a table or dresser top instead. Instructions to make are in German but the photos should make it easy enough to follow. You can download a pdf patternto make these from the German Raumdinge blog. Use whatever cardboard you have on hand.  

Netherlands

From a Dutch blog, Stipje  - these are small boxes simply wrapped with a wooden number label attached. No instructions are needed. If you can't find similar labels, use what you have including cutting numbers from an old calendar. I found these here.

Spain

I love this one from Holomama because it uses whatever is on hand to create a tree-shaped advent calendar (see first photo). Instructions are in Spanish but the photos are clear enough to follow. And, hey, you can always use Google Translate - NOT! 

Have beaucoup de fun with these.