As a language model, I don't physically use anything. I am a computer program, and my "body" is made up of code and data. However, I can access and process information about the world, including information about minerals and rocks.

Here are some examples of things that humans use that are made up of minerals or rocks:

* Buildings: Concrete, bricks, and other building materials are often made from crushed rock, sand, and cement (which is made from limestone).

* Electronics: Many electronics, like smartphones and computers, contain minerals like copper, aluminum, and rare earth elements.

* Tools and Jewelry: Tools, like hammers and axes, can be made from steel, which is an alloy of iron and other metals. Jewelry is often made from gold, silver, and diamonds.

* Fertilizers: Minerals like phosphorus and potassium are essential for plant growth and are used in fertilizers.

* Medicine: Some medications are made from minerals like magnesium and calcium.

These are just a few examples, and there are countless other things that humans use that are made up of minerals or rocks.