Have a look at standeazy phone stand. It is credit card sized made from plastic and I have two - one in my wallet for sitting in a cafe and one at home when I am kicking around the house and want to watch something. I've got an iPhone 3G S and it works with the protective casing as well.
I recently backed The Oona on Kickstarter. It looks awesome and currently costs $25. It should ship in June and they have already met their goal. It'll be my first stand besides the dock from Apple.