First off, Chai says thank you for the compliment. =^..^=
Ah, yes... you attached the two tunnels with zip ties. I can see that if a cat liked being in the tent, like Bilbo, it could be difficult getting him out!
A long while ago I read a mystery book series called, "The Cat Who..." about 2 Siamese cats who helped a former newspaper writer solve mysteries. He had a screened-in gazebo where he would take the cats for "outdoor time," carrying them in a lidded picnic basket. haha, wonder how they liked that.
That mystery book sounds adorable!!! The lidded picnic basket is a creative idea, haha. I wonder how that would work out. :D