You could try one of the following:
Tech Review: wonder wash travel washing machine - San Jose Photojournalist | Examiner.com
That is the one I was trying to link to found one at a second hand store for 10 bucks works good and when not being used all the parts store inside along with small bottle of laundry soap. For me it was money well spent don't take long to save the pur have price as opposed to laundrymat prices in my area they average 2.50 to wash and same to dry so two loads paid for mine and a coup,e months worth would pay for new unit. Should have posted this in the 500 buck thread