Natural-Material Cat House: Archive Craft Ideas

Dear crafters, please share your experience and ideas. I found these examples.

This is an archive discussion of ideas, not a step-by-step tutorial. If you make a cat house, choose stable, non-toxic, well-ventilated materials. Do not leave staples, sharp edges, or loose strings accessible; let adhesives cure fully. The cat must be able to leave the house freely, and the item should be removed if it is chewed or damaged.

It is summer now, and there is plenty of natural material around that could make something this beautiful. What are your ideas?

I am especially interested in natural materials and different house shapes. Similar materials are used for many objects, but a homemade cat house is not a child sleep product.