Microscope for Kids, SKYBASIC 2" IPS Screen 1000X Handheld Digital Microscopes HD Pocket Portable Mini USB Microscope Camera, PC Compatible, Science Edu Fun Birthday Gifts Toys for Children Students

Interesting, maybe the nylon is viscous enough when melted to grab onto the fibers and hold them down while it cools. I don't think I want to buy a roll but I am curious what it looks like up close. If you're so inclined the microscope I used is only $30 https://a.co/d/03sbUYnp