We have no galley, so no permanent sink. I came up with this:

It is an Ozark Trail Collapsible Sink that is typically stocked locally at Walmart. Made to fit over a 5gal bucket to catch and contain the grey water directly from the sink drain. The sink feet did not fit around the bucket initially, but it is soft plastic. I trimmed the sides of the feet with a box cutter until they would slide around the bucket rim. I figure the seat of a picnic table, step stool, milk crate, etc. would elevate it to a more comfortable height to use.
It is an Ozark Trail Collapsible Sink that is typically stocked locally at Walmart. Made to fit over a 5gal bucket to catch and contain the grey water directly from the sink drain. The sink feet did not fit around the bucket initially, but it is soft plastic. I trimmed the sides of the feet with a box cutter until they would slide around the bucket rim. I figure the seat of a picnic table, step stool, milk crate, etc. would elevate it to a more comfortable height to use.