yes, a lot - long term traveller sink or bucket or X-large saucepan. it's easiest to do five at once but you are limited by how many containers you have. small container of some detergent powder. (buy a big pack, take a small container's worth, leave the rest. ) 1. some medium warm water in a bucket plus a really tiny amount of detergent. 2. put in one item, or two same coloured t-shirts, or one pair of jeans in a big bucket, all your socks and underpants. whatever. this would be a good time to do any special washing like if you had a stain and you want to rub something in or you need to specially rub under the armpits or whatever special stuff you want to do for something that's especially dirty. that's not normally a problem I have. 3. leave them for like 8 hours or overnight or something. here in place of the 10 minutes of violent washing in a washing machine we have a long time of just the molecular motion of the water and the detergent doing the work 4. next day or in the evening after the morning , rinse the clothes out with water. I Twist out each item a bit and run each under the cold tap. 5. now half fill up each bucket or sink or container with cold water. put the items of clothing back in. 6. I leave these for a few hours. for however long you want,I don't know. gets out the last of the detergent. that's a kind of thing with me, I really don't want detergent staying in my clothes. Done. you know twist them out hang them out dry them whatever you do with your now washed clothes. I have done this a lot, intermixed with sometimes access to a washing machine, and I really can't tell the difference . they're just clean like any other clothes. smell clean feel clean the actual amount of time you spend doing this is not actually that much although there is lots of waiting which is fine. it's a bit of a pain when I have to do it but really it only takes 10 minutes at the start if I have five buckets + Sinks + pots and then maybe 10 minutes at the end. it's not a big deal for me