Silicone Body Scrubber under 10$, Water flosser, Brita Water Filter.

Daily usage for all of them

Altra Escalante running shoes (not daily usage, sadly)

To be fair, when I needed to use Edge for work I only searched for three out of four extensions I have on personal Firefox:

1) - uBlock Origin

2) - Hover Zoom+

3) - Limit Tabs

Couldn't find the last one, or something similar at least. There is one extra addon which I don't need on my work computer, but use it on Firefox personal computer:

Update Scanner (you can scan webpages for changes, or use it like an RSS feed)

LE: i think i will increase the list after reading this thread, HTML5 playback speed does sound usefull.