This Anki plugin lets you quickly insert Unicode symbols into cards by typing a predefined key sequence.
The symbol list is fully customizable, and you can add, import, and export your own list of symbols through the Options window. To open the Options window, click on the "Insert Symbol Options..."
item in the Tools
menu. If the plugin was just installed, you may need to restart Anki for the menu to show up:
This should bring up the following window:
This plugin is licensed under the GNU Affero General Public License version 3, same as Anki.