How to remove local (untracked) files from the current Git working tree

Question

How do you delete untracked local files from your current working tree?

Answer 1

I like git stash push -u because you can undo them all with git stash pop.

EDIT: Also I found a way to show untracked file in a stash (e.g. git show stash@{0}^3) https://stackoverflow.com/a/12681856/338986

EDIT2: git stash save is deprecated in favor of push. Thanks @script-wolf.