I use small face washers and a cut up flannelette sheet for drying. I don't have any taps upstairs so I have a kettle and a bucket set up next to the change table. Just run some water on the face washer over the bucket. Dry her off with a flannel. Wash them with nappies. I do the same when out, just use my water bottle to wet the washer and chuck them in the nappy bag.