Used by climbers and lifters, even acrobats at height. Or snapped with a string that's pulled very tight. I can write in many colors, the most common is white.

I don't eat light, yet I burn fat. Forget me not, or I will attack.

Despite its name, ladies can also deliver letters here

Say it before a snap. Eat it and take a nap. A version is made backwards Another is full of holes What is it?

I am made by people, but I am not alive. I can move, help, and do tasks. Some of us look like humans, and some work in factories. What am I?