Obscure Package (?): tmr
One day in the last few weeks, I had a need to set a couple of timers of different lengths. My phone was out of battery, so I pulled out ol' reliable (typing "5 minute timer" into DuckDuckGo). Just as soon as it had started running, I thought "wow, it seems dumb to open a whole new browser tab for a timer". Then I thought that surely I'm not the first Emacs user to need a timer, and that something must exist here already.
Obscured by search results of Emacs Lisp and org-mode
timers, I came upon tmr, from Prot. You might be surprised that it exceeded my expectations, purely just because of the tabulated view. It fits cleanly into my setup with the below snippet. I recommend you give it a try.
(use-package tmr) (add-to-list 'display-buffer-alist '("\\\\*tmr-tabulated-view\\\\*" (display-buffer-in-side-window) (side . top) (slot . 4) (window-height . 0.1)))