This is a very simple solution to a very simple problem. It isn't a very interesting project but it's quite useful.
The problem is simply that I have to write physics formulas relatively often and that these require letters from the greek alphabet that represent physical quantities. I used to search the character online to find it in text form, I'd try selecting only the character and I would copy it for my use. This was very slow and it created a frustrating break in the middle of writing.
The solution I found is very simple: it's a raycast extension that just lets me search for the character and copy it automatically.
The extension in action
If you want to set it up for yourself, you can find the source code here: the project's github repo