If you have a tree IN your house and you own a cat, it is inevitable.
When we built our new house I wanted a remembrance of the cedar trees in our old yard, the house where I grew up, so I convinced my hubby to make a corner molding out of one of them, and he did.
I picked just the right one that had an overhanging branch to the left.
We hung a vacant wasp nest on the branch last year. You can see it on the corner of the doorway.
So now those kittens have discovered a natural spot for their climbing, scratching and perching. Those very lucky kitties!