I found this awesome idea here, it's an advent activity countdown printable. It was made to be a countdown, where you can pick a card each day and do the learning activity that goes with it. I decided to put the countdown cards on little envelopes and put the activity or supplies inside the envelope. We don't use it as a countdown, we just pick different activities to do during the day, this has been a fun activity and great for pre-schoolers.
Here's a closer look at my envelopes. For the candy cane ornament envelope I have pipe cleaners and beads inside the envelope, so when that envelope it picked all the supplies are there and it's ready to be used.