You can use React inside a Blaze component, and everything will play nice.
As for some examples:
The Icon component is a React component, and we have an example in out docs of how to use it with a Blaze wrapper component. Example under
"Example (Client) (Blaze)"
Just apply that style to any react component.
You can also do something like following:
In the Blaze template.js file, you can define all the props for the react component
Then in the Blaze template.html you can just display it with the helper
All React components in Blaze templates need to be wrapped in an HTML element, and be the only thing inside. Otherwise you'll get critical errors.