Yep. That's my answer, too.
If you had asked me that (or if I had asked myself... lol) ten years ago, I'd probably answer that my baby blanket isn't for sale, nor is my dog, my gospel CD/DVD collection, or my deceased father's pictures. But after having lost a lot of material things in my life, I realized that every tangible thing is just... a thing. I didn't come here with it, and I won't leave here with it. So, for the right price (it'd have to be a heckuva price, though), I'd even sell my great-grandmother's pearls. It's just stuff.
OMG! I was just studying some of Ecclesiastes and how Solomon did it all and experienced all the world has to offer, and discovered after all of it, that it's vanity, empty, void...
He even said that sorrow is better than happiness, because sorrow is what helps us examine ourselves and make changes (that's a drastic paraphrase of course). It really made me think. All of this striving to get more stuff, one could just take a page from Solomon and save the trouble. Stuff is okay, but focusing on it causes you to lose out on what really matters.