You can make pretty surprising surfaces when you dip closed shapes into a soap solution. There is a lot of math/science behind the surfaces that are formed, but it's easy to enjoy the shapes without any knowledge at all.
Photos don't do the shapes justice, you'll have to see them with your own eyes. Go make a few and experiment.
Step 1: You Will Need...
You will need the following items:
Nails (or paper clips or coat hanger bits. I picked nails because they were handy)
A small torch or soldering iron.
Soapy Water and string for dipping the shape.
Standard warnings: Fire is HOT, Flux is corrosive, lead-free solder is better than leaded solder. I can guarantee you will burn your fingers picking up a shape before it is cool, because even though I've done this stuff a lot, I still am too impatient.