@virginiarose,
I like the photo of your 'high-rise patio ghetto'. Very nice.
Lately, I have not been able to have a 'bag ghetto' as my friend Plant Sister taught me to make compost in the empty bags from mulch and potting soil and even the large size dog food bags if they are plastic. Fill with plant material, a handful of garden soil, water, poke a few holes in the bottom, I use the ever-reliable clip clothespins to close the top against the weather, set the bags in the shade and wait. Ta-da! Compost!