The Quick Access bar has a little tiny black down arrow, once clicked takes
you to a selection dialog box.  Change the view option from Popular to All
Commands.  All commands are sorted alpha  A, B, C...put your cursor in the
list and hit "P" to find the paste toolbar for example.

For all your command toolbars that you use regularly, put them on the Quick
Access toobar, and then move the Quick Access Toolbar to BELOW THE RIBBON,
and then you have enormous room.

Don't forget about the Magic Button too.