I have been contacted by the folks at Our Deathly Hallows, they told me about their awesome idea to celebrate Harry Potter and the Deathly Hallows.  Their site is only a teaser right now until the full site is up.

It is a fansite, completly unofficial, where we want to honour J.K. Rowling by selecting our favourite Chapter, Person and Invention from the Harry Potter-Universe she has created.
Today, one year after Deathly Hallows, we just want to announce and start phase one: Calling out for Harry Potter-fans. We want as much Harry Potter-fans as possible to participate with us.