little wooden box with succulent plants. I have to do this, I am so good at growing and propagating succulents. You can do this with old cigar boxes!
Make a grass lounge for your indoor cat with a cement mixing pan and a sheet of sod from your local hardware store. (Only $10 for the tray and sod, new sod costs about $2.50 in our area and lasts up to 5 days indoors.)
Cat food perch made out of an old cat scratching tree post. I cut holes in it big enough for the food dish to slide in but not slide through & bought a few shelf brackets & attached them & hung them on the wall!