Yea, I think short of an icon editing program, u can only do it via a screen cap. if there is a particular size you want, I'll be glad to upload a transparent version for you.
Added an iPhone icon. It is taken from a 3G picture but I don't think you can tell. It also just displays as 'iPhone' but you can change that to whatever you want by editing the autorun.inf
Added a zune icon too. I know the zune can be hacked to be read as a mass storage device on pc so that is why I made one. Zune 80 and flashes will be coming if I see any kind of demand.
EDIT:
Elsi, Here are 3 sizes of Kindle pictures with transparent backgrounds. Take which you'd like. Also, wouldn't mind a credit on your blog ^_^.
Based on Vista, the first icon is Large, the second is in between, and the last is extra large. When you choose how to View items in a folder.

