Well, first things first, make sure that the Christmas tree is securely anchored to the wall or ceiling so that it doesn't tip over when a cat climbs on it. Second, use wide, stable bases for your ornaments so that they won't fall off easily. Third, place your most precious and fragile ornaments out of reach, such as on higher branches or near the top of the tree. And finally, don't forget to keep a close eye on your cat when they're near the tree to prevent any accidents!