Available in the Mozilla addons directory - https://addons.mozilla.org/en-US/firefox/addon/recent-bookmarks/
Displays a simple button in the menu bar that opens a popup window with the latest bookmarks created
Let me know in the issues if you have an idea or a suggestion. I'm learning web extensions.
I'm using the Issues to create a ToDo list
Based on the tutorials on Firefox and this example extension - https://github.com/mdn/webextensions-examples/tree/master/bookmark-it