We are obsessed with dishwashing soap solutions. Saw this at a friend's house and went right home to make one ourselves. On his kitchen sink, there was a vintage style Geyer Freres 1895 bottle with a cork pourer stuck in it. Inside was a mixture of dish soap and water. When you needed some soapy water, all you did was turn it over and pour.
As much as we try to keep our sink minimal, this was very practical and had a rough and ready, old-salt type of cool to it.
The bottles are the key. They are thick and a little imperfect.
Although they look like vintage and are printed with the Geyer Freres name, The French beverage company, Lorina (fyi: funny promotional video as site), has long since bought them up and sells their assorted beverages in the bottles.
We found Lorina at Citarella, but you can probably find them at little gourmet markets all over the city. As for the stoppers, we used to buy them at Restoration Hardware, but had no luck there this time, and found much better ones at Katz & Company, but you could probably find these at Broadway Panhandler as well as a number of other places. (Thanks, Jim!)
(re-edited from original post on 2004-08-17 - mgr)