Inspiration - felt santa letter ornament-something like this would be cute to make with a pocket in the back to put the current Santa letter in. Then hang it on the tree or on a doorknob. One of Santa's elves can then take the letter.
Make this christmas special with handmade tree decorations that will last for may years to come. I have carefully handcut this mistletoe out of a double thickness of quality green felt, then blanket stitched around each branch, so they are really sturdy.