We used to prop our dishwand (Scotch-Brite brand) on the edge of our sink, but it was constantly falling off, causing the soap to leak out. Most of the
...Plus commercially-available holders rely on suction cups, which I've never really trusted, so I designed this one to fit over the divider in our double sink.
For a style that doesn't rely on careful sink measurement, see Vik's <a href="http://www.thingiverse.com/thing:11852">Washing Up Brush Holder</a>.