How To Attach Smartphone To Tripod

How To Attach Smartphone To Tripod

Instead of buying a smartphone mount or clamp, there are 2 inspirational ideas to use existing materials you already have (I guarantee it is the cheapest). And it is simple & easy. Also how do you make a tripod?
1. How do you attach your smartphone to tripod?
2. How do you make a tripod at no cost?