When our dishwasher broke a few years back, my youngest begged me not to fix it. She said she enjoyed all of us doing dishes together.
Today I used Mrs. Meyers biodegradable dish soap, less than a quarter sized drop, in my stainless steel bowl. I used another bowl on the left to catch rinse water.
When I finished, I poured the wash water into the bucket, then the rinse water in the wash bowl. Swished that around and poured it into my bucket. The bucket measures three gallons precisely at the top.
The website about Mrs. Meyers biodegradable dish soap is:
https://www.mrsmeyers.com/product/dish/dish-soap/liquid-dish-soap-acorn-spice/