The Problem1. Firefox cannot shuffle bookmarks in a folder.2. Not having this feature results in bookmark tunnel vision.The Solution1. Add the ability to shuffle bookmarks in a folder.2. Add an option to shuffle recursively for sub-folders.3. Add an option to adjust shuffling intervals.The Example1. This mode would be especially useful for a Music folder of bookmarks.
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@lr An addon can do all what you describe/want.
Should i make it for you?
Also there seems to already exist this: https://addons.mozilla.org/en-US/firefox/addon/random-bookmark-addon/
which is only the shuffle folder part, but maybe that is really everything you want/need.