We have to use an artificial Christmas tree because of allergy problems. Our cat, Briggs, has never climbed in it but she likes to eat the fake pine needles. I'll walk through the room and spy her sitting next to the tree, munching on a limb. Naturally, later on I'll have the task of cleaning up kitty barf. This also goes for other faux greenery placed anywhere in the house. I have some adorable miniature trees that I gave up on completely. In fact, dear Briggs climbed up into the top of a closet just last night and caused the box containing the mini-trees to come tumbling down, spilling open and displaying tiny trees and ornaments all over the place. When I discovered this, I was relieved that all the trees seemed intact and bore no signs of having been gnawed. We put up a tabletop metal tree last year and only hung fabric or other unbreakable ornaments on it. She had no mishaps with that and actually seemed rather disinterested. Makes sense, right? Where's the fun in something that can't be destroyed