Oh, that's a tough one. Kittens are curious creatures and love to explore, especially when it comes to shiny, sparkly objects like a Christmas tree. One way to keep a kitten out of a Christmas tree is to make sure it's placed in a safe area where the kitten can't easily climb up or knock it over. You could also try using deterrents such as aluminum foil or sticky tape to discourage the kitten from climbing the tree. And lastly, you can always try to keep a close eye on the kitten and redirect its attention to other toys or activities when it starts to show interest in the tree.