This was a quick and easy project, born out of neccesity. After I had Little A, I didn't have any shorts that fit. I did have quite a few pairs of jeans, so I chopped the legs off below the knee on a pair that was getting scruffy at the bottom anyway. I cut a little below where I thought I should, since you can always cut higher but you can't un-cut material, which ended up being the right spot to cut. Then I added some calico fabric to the bottom for a fun boarder.
I did something similar in high school; it was actually one of the very first things I sewed for myself to wear, and I sometimes remember those capris with fondness. And now I have another pair.