As I mentioned, I do have one crazy looking decanter that's large, impractical, difficult to store, unwieldy, and yet is crazy beautiful when sitting on my table. The Riedel Tyrol decanter is a monster and I wouldn't really recommend it for anything other than aesthetic considerations. It usually sits in my cupboard, but is brought out occasionally when I'm feeling particularly fancy!
While this may seem to be a really frivolous item, that's what makes it a great gift! It's monumental and something very few sane-minded wine lovers would even consider buying for themselves!