This isn't strictly pony-related, but we love helping out the show staff whenever we can, and I think this qualifies! Besides, it's pony-related if you stretch it a bit, which I'm about to do.
Are you interested in owning a piece of pony history, as well as other history stuff that probably came before ponies but that one can only speculate on? Then you might want to take a look at this. Daniel Ingram is selling his custom-designed maple desk on eBay. This is where all the music magic has happened throughout all three seasons of pony, and on top of that it's a beautiful desk if you've got the room for it.
The eBay link is here, and currently the price is quite reasonable. Let's see where it goes!