The Fantastic card I made for a friend to give away, I used paper from the 8x8 Rock Star paper pack and a Stampin Up Stamp. I just folded it in half and decorated that way.
The other one I made for my Grandma's 85th Birthday, I used some Amy Butler paper that I love, some other paper I have laying around, A Prima flower and a Stampin Up stamp.
My favorite Ink that I use all of the time is Adirondack by Ranger and the color is Espresso, it's a die ink( I think) but I use it all of the time instead of a harsh black. I really like how it looks and it drys quickly. I'm not sure if you can watercolor on it though.