For us ATC types it's very convenient that Halloween has 9 letters. The pocket pages that many of us store our collections in have 9 pockets per page. Over at the SwapBot site there is a Halloween swap series where we're creating cards featuring a single letter. They're being sent out in batches to a variety of traders throughout October and by the end I'll have a complete page of Halloweeny delights.
Here are the ones I made:
Mwah-ha-ha...can't wait to see what goodies arrive in my mailbox! I'm thinking they'll make a nice bit of holiday decor to hang on my wall. :D