We all have certain special characters that we use all the time, and finicky little ways to type those characters. You might google the name of an emoji, or download a menu bar app for copy-pasting, or learn key combinations for adding diacritical marks to letters.
Here’s another option: Bookmark CopyChar.cc.
If you come across a symbol you've never seen before, or you want to look up the unicode for a certain symbol, it may be a small challenge to search for it if you're not entirely sure of its name. Mausr lets you draw the symbol instead, then identifies it based on your drawing.
