I’ve been using soapnuts for just about everything lately. They are especially handy for doing laundry. All you have to do is tie up 5 berries in a muslin or net bag and toss it in with your laundry. I like to add a few drops of musk oil, and a bit of hydrogen peroxide to remind me of the perfumed laundry soaps I have grown up with. One bag of five soapnuts will be able to wash about 5 loads of laundry, or more, just keep an eye on your soapnuts, and as they break down you can add some more.
I also found that you can make them into a liquid detergent which I have described and detailed in my Cradle to Cradle Dish-washing instructable. This liquid can also be used for washing out the fridge, cleaning tables, the floor or anything else that need cleaning. It can be used for shampoo and as a spray for house plants to help to protect them from insects or fungus.
I also have found that keeping a bag of soapnuts in the toilet tank will help to keep the toilet smelling fresh and keep it clean.