We secured the tree to the wall so it couldn't be knocked over by the cat(s) just in case and hung cat safe ornaments in the same way we only hung child safe ornaments and secured the tree from falling over when the kids were very young. We also placed catnip toys hanging from bottom branches (adding a new one every couple of days) so could be played with at floor level and to catch their interest so would hopefully forget about climbing.
We secured the tree to the wall so it couldn't be knocked over by the cat(s) just in case and hung cat safe ornaments in the same way we only hung child safe ornaments and secured the tree from falling over when the kids were very young. We also placed catnip toys hanging from bottom branches (adding a new one every couple of days) so could be played with at floor level and to catch their interest so would hopefully forget about climbing.