I use a document on Google Docs as a simple to do list.  I hate it that I have to access the Strikethrough command via a menu.  Is there a hidden keystroke to toggle Strikethrough or perhaps a way to add the Strikethrough command to the toolbar?
A faster way to access Strikethrough on Google Docs
google drive;google documents
For Windows:Select what you want to strike and click Alt+Shift+5.For Mac:Select what you want to strike and click +Shift+X.Ctrl+? or +/ shows other such keyboard shortcuts.