How to tar files matching a given name pattern in all subdirectories

This is just a quick repost of https://stackoverflow.com/questions/18731603/how-to-tar-certain-file-types-in-all-subdirectories, because I find it so useful:

Given a directory with deeply nested subdirectories, and I want to just extract e.g. all *.yaml configuration files, this is the command to do it:

find . -name "*.yaml" | tar -cvf my_archive -T -