There is a type of rhododendron which makes a superb container plant, and even performs greatly when pot bound, since many species are epiphytes in nature. https://growplumeriafrangipani.blogspot.com/2011/04/tropical-rhododendron-vireya.html These are vireya rhododendrons. https://scholar.lib.vt.edu/ejournals/JARS/v32n1/v32n1-leach.htm https://rhododendron.org/vireya/index.html https://rhododendron.org/vireya/gallery.htm https://www.rhododendron.org/vireya/archive/StevensNRBGE85.pdf https://www.rhododendron.org/vireya/archive/CallardRSF2011.pdf https://www.rhododendron.org/vireya/history.htm http://scholar.lib.vt.edu/ejournals/JARS/v46n1/v46n1-moynier.htm Many vireya hybrids were created in the Bay Area, especially at the San Francisco Botanical Garden which was the Strybing Arboretum. https://scholar.lib.vt.edu/ejournals/JARS/v45n1/v45n1-morebeck.htm
Instead of running to the store every time you need a handful of fresh basil (and inevitably letting the rest go to waste in your fridge), having an herb garden of your own allows you to only take what you need. While this in itself is a great sustainable practice, try taking it a step further by starting an herb garden in old plastic fruit containers.
Growing your own vegetables is a fun and rewarding activity. Not only will you ensure they are at their freshest when you eat them, but you will also know how they are grown, especially if you care about pesticides and other harmful chemicals found in commercially grown produce. If you don't have an outdoor garden space, you can still grow some tasty veggies indoors - and some of the simplest (and fastest-growing) are radishes.