Reddit, what collectibles do you own that will pay off all your debts 50 years from now?

Just read this article: http://movies.yahoo.com/news/action-comics-1-sells-2-16-million-auction-010326975.html about a pristine Action Comics 1 that just sold for $2 million! What do you think will be super rare and valuable sometime in the future? Personally I'm still holding on to my Pokemon cards...