I came across an interesting product when I was working. The product is called a Scrubba Portable Laundry System Wash Bag.
This is super cheap compared to a washing machine. I have seen relatively cheap washing machines for $300 the Scrubba Laundry System is a little over $50. However, it is more labor intensive, but if you don’t have the money for a washing machine, cash for constant trips to the laundromat, and you don’t otherwise have access to a washing machine the Scrubba Laundry System is a good option to consider. The video below is a demonstration of how the system works.