I've seen one made out of a fancy metal birdcage. They got it at a flea market, spray painted it (using one of the wedding theme colors), and then wove some wide satin ribbon through the bars around the bottom so that no cards fell out. So really anything goes.
I made one for a friend of mine who was having her 50th jubilee as a Catholic nun. She was the accompanist for my choir and taught music and played piano and organ, so I made a box that looked like a miniature piano. I used one box shaped like a piano case, then attached a flat box that looked like a keyboard, supported the keyboard with legs, painted the whole thing black, then stuck on a strip of paper that I painted to look like a keyboard. I painted the symbol for her order in gold on the front of the piano, where the makers' name would go on a real one. I cut a slit in the top, so that cards could be dropped in.
Cautionary note: if you make something intricate, be certain that they can get the cards out! I ALMOST forgot that little detail with the piano. :shock: An extra hour's worth of work and much more swearing than Sr. Mary would probably have liked ( PLEASE don't tell on me!), everything played out. :rofling:
I'm not necessarily advocating doing something as ridiculous as that piano. Does the bride have a theme? Does the happy couple share a hobby? I should have made one out of a golf bag for my sister's wedding. Or used a larger sized basket on a prettily decorated Schwinn since they spent their honeymoon riding their bikes across Iowa.
Okay, now I'm rambling and no longer helpful. A friend says that this kind of off-the-cuff creative crap is what I'm best at, so shout if you want more possibly useless ideas.