Studded Phone Case: All you need is a phone case, iron on studs w/ no "legs", Krazy glue, ruler and pencil. Draw the lines for your design then adhere studs accordingly. Ta-da! enjoy your affordable creation ;)
Use a sharpie to trace the pattern onto the backside of a piece of leather, then cut out. Punch a hole, with a leather punch, large enough to allow the headphone jack to pass through. Stitch on snap closures using needle and thread. Finish it off by using a dab of glue to adhere a flat back stud to the opposing side of each snap for a fun detail.
The cute shoes always cost more, so here's a way to transform ugly duckling pumps for cheap. And there's the fun factor of spray paint making me feel like a rebel. :) But I imagine you'd have to buy the right kind of paint to make these DIY cap toe shoes not look trashy.