A button to create new files inside macOS Finder (`touch` without the terminal).
https://github.com/ivanmaeder/finder-touch/
(⌘ + Shift + N creates new folders by the way.)
This I just published now, I use it multiple times a day: an iOS shortcut for emailing myself things.
https://redchamp.net/blog/email-me
A command-line script for bulk-renaming files (it lets you edit file/dir names inside a text editor).
https://github.com/ivanmaeder/vimv/