Last year, we put Kona in her crate while we put up the Christmas tree. While she liked to lay under it she never went after any ornaments and only chewed the branches once or twice when we weren't giving her enough attention. We will see what happens this year with two of them…However, Keoki is so good he probably won't be phased by it!
Good luck puppy-proofing...it is an ongoing process for sure!