If you'd like to easily type some non-standard glyphs, adding a custom keybinding might prove useful.
The keybindings file is located in ~/Library/KeyBindings/ (You will probably have to make this directory and then add a file named "DefaultKeyBinding.dict".]).
The syntax for these keybindings are:
"[keycombination]" = ("insertText:", "\[unicodenumber or actual character]");
Example: "~*" = ("insertText:", "\U0215"); /* the times-symbol "×" */
In this "Keycombination" field:Mac OS X Hints
http://hints.macworld.com/article.php?story=20120822010316876