I let the paint dry (I used Reeves watercolor tubes, they are around 10 bucks for a set at Hobby Lobby) and took a small travel size shampoo bottle from a hotel (that I had been saving for a year), emptied it and filled it with water. All I need now is a paintbrush small enough to fit in my little box and a pad of paper and I will be ready to paint.
Make sure the shampoo bottle fits in the box because once that paint is dry, it fits along with it. Now you are ready to paint the boring hours away!
Here is my little set: