She's been dead a few years, but the first Christmas we had our first basenji, Suagr, she managed to get an ornament. I had completely forgotton about hanging an ornament made from a milkbone, near the top of the tree. She GOT it. It was our first time experiencing the 'they're like cats' trait the breed has.
So, I can see the appeal of this, but closing the door worked for us