This is excellent. I prefer Unicode characters over images when possible, like arrows for example, but often struggle finding the exact one I need. Here I can sketch ‼ what I need and then narrow down my search. This is just perfect, many thanks. UX is easy and intuitive. Goes to my bookmarks.
I made a similar tool that in my opinion looks better and is more useful for finding characters. I feel that the tool the OP posted seems cool for short periods of entertainment, but isn't very useful for utility. Link to my website here: https://unicode-atlas.vercel.app
Like, who knew this is even a character: ᆚ