I made this ages ago and it’s a fun advent calendar to get out each year. All you need is a flat (if possible) baking tray, ruler, pen, paper, glue, embellishments, a piece of ribbon, something to make a hole and little magnets.
First, decorate the back of the baking tray with some patterned paper.
On another sheet of paper, mark out your advent squares. I have done my squares approx 1″ in size and they are 5 x 5 – depending on the size of your baking tray you might need to adjust your sizes. I used a dashed line rather than a solid one to mark this out and then trimmed this sheet of paper down to fit where I wanted it on the tray and stuck it down.
Cut some squares out of cardstock and then decorate. I have edged my squares with some ink and used what I could find lurking in my embellishment box. Pop a magnet on the back of your squares when you are done.
I punched some circles out of another patterned paper and stuck some stickers on for the month of December and added these to the top part of the tray. To hang your tray, punch a hole in the top (I used my crop-o-dile) and then thread some ribbon through.