Washing laundry in an off grid situation is tough. You have to think about energy use & water demands. We have a simple off grid laundry solution using a small salad spinner for washing our unpaper towels and other delicates such as bras.
Here’s a video of our salad spinner laundry machine:
The salad spinner was purchased for about five dollars at a second hand store. It works great as an off grid DIY laundry machine and spin dry solution. It takes up virtually no space, so it’s also great as a tiny house laundry machine.
This would also work great as a portable laundry machine to take on camping and RV trips to do small loads of laundry as needed.