Good ideas, but we've done both the pen set, and the scarf and gloves in the past! And they aren't movie-goers, although a GC is a thought.
Since we had to make a decision, we've ordered a couple of books from Amazon, and we'll tell him tomorrow quite truthfully that his gift has been ordered but hasn't arrived yet, and we'll get it to him before Christmas. I've wrapped a small box of dark chocolates (he can have a small amount at a time) for something to open. Phew.