In the same way, I organized some children's clothing in sizes that we don't need at the moment...it is amazing to look into the drawer and see everything at a glance.
I am planning on reviewing the book at some point, but I need to re-read it first.
As for gardening, my husband found a source of food-grade five gallon buckets: a local food business is selling their empty buckets for fifty cents each. He is amassing a collection of buckets for container gardening, using two nested buckets per container, with a space for a water reservoir between. Apparently the big challenge in container gardening is in keeping everything watered.
Some other sources of lower-cost plants, that I didn't mention in the last post: cuttings and splits and seeds from other people's established gardens.