How to choose special characters, revisited

There's no euro symbol on my keyboard, but I can enter that character in any document or in my terminal with Ctrl + Shift + u +20ac. I can do the same with "umlaut a" (00e4) and "cedilla c" (00e7) and the degree symbol (00b0) and... Wait! Who am I kidding? There's no way I can remember all those Unicode code points. For this reason I wrote a script for quick and easy retrieval of my most-often-used special characters from a GUI.