In my other printing post, I told you to look in unexpected places for things to print with. I found balloons. All you have to do is blow them up a little bit, about the size of a baseball. Then rubber band it shut, don't tie it, because then you can use it over again. Make sure you have a paper towel and baby wipes handy.
Now get a piece of cardstock or something to paint on. Pour a bit of paint out and dab the balloon into it. Get some of the excess paint off by dabbing the balloon on a separate piece of paper. Now have some fun creating cool textured cards.
And here is the finished product.
I added lightning to this to make it look like a storm. I hope this proves useful!