Lisa, I have seen those plunger type washers - is your plunger part blue? On Amazon they call it the Rapid Washer.
I did a load of dishtowels, toilet cloths and tee shirts today with my wonderwash.
I have a thread here where someone included a nice Wonderwasher photo so I am putting my wonderwasher clothes washing notes here
If anyone is curious what this looks like, go to that link to see the photo.
I use mine outside so it doesn't matter if things get a little splashy. The water i use for the laundry came from the rains, and into my barrel. Then i dump the used wash water on my thirsty trees. I feel like an entire ecosystem! It makes me feel good about my habits.