Sculptural photo albums - absolutely brilliant! I met the designer of these, Debra Folz, at Louis when I was there to interview Jonathan Saunders, and I was immediately drawn to her whimsical display.
Instead of gathering dust on bookshelves, Folz's The Whole Story photo albums sit pretty on a coffee table, encouraging guests to flip through and share in the memories. The customized bindings can also be removed to expand the album and display "the whole story" at once, as seen below.
To my next friend to get married: Don't bother sending me your registry; I already have something in mind!