There's a small set of materials needed for creating metal inlay, and some of the tools are optional depending on your needs for your project.
Here's a small set of tools that are required if you choose to create the metal powder yourself.
There are plenty of options for purchasing metal powder if you don't want to make the powder yourself. Buying the metal powder is a lot more expensive, but it's much less work.
There are a few choices for Cyanoacrylate (CA) glue, but the main thing you are looking for is the thinnest glue possible. Look for CA glue with the lowest centipoise (cP) value possible. The best I have found is in the 2-3 cP range.
There are a few tools that are needed if you are following this tutorial step by step, but you can also accomplish the same thing using other methods if you are inlaying the metal into plastic or some other material.