In just a couple minutes you can fold an easy double-pyramid stand for business cards or phones. Check out the video tutorial from Leyla Torres right here.
Below is a still from Leyla's video. Wouldn't it be cool to fold a whole bunch of these, hot glue them to cardboard, and hang them on the wall? The trick would be to use gorgeous colors, so you might try this origami pack of 100 different hues. I used some on this thing.