I did the same with Palm Pre/Pixi chargers. I'm disappointed they weren't included in these tests, but industrial design-wise, they are THE best I've seen. The same size as Apple iPhone chargers, but cylindrical with soft touch surface and folding prongs.
You can still find some on Amazon, it's just hard to tell whether the seller will give you the correct, genuine ones. http://www.amazon.com/Palm-Wall-Adapter-Charger-Treo/dp/B002...