Thinking outside the box-Manipulating filament

So ive been trying to think outside the box lately and come up with alternative methods in 3D printing. Mainly hoping to stumble across a great idea or inspire one. My latest test was making a spring from unprinted filament using a tool that I 3D printed. Ill be the first to admit that this is mechanically an unpractical spring. I originally made a single filament spring out of PLA (in pink). This was very weak. Less than a pound of force. I then built a tool (ABS) that would receive a spring ma