The wheels are a-turnin.

I need some bamboo.
About four to six feet of 3" diameter, and another few feet of 1" or 2".
Then I need a half of a wooden staved barrel, and a cylindrical humidifier filter, and some old 70's style wooden salad bowls, and a tube of mildew-resistant silicone.
Oh, and some black mesh screen, and a piano hinge.
The cats are gonna love me.