Hand Stretches and Plus Buttons

At work I make constant use of the “new tab” button on my Firefox toolbar. At home I use Safari which has no such button. The keyboard shortcuts to open a new tab are almost identical in both applications (CTRL-T for Firefox, COMMAND-T for Safari), yet I never use the keyboard in Firefox because the “T” key is too far away from the “Control” key to hit comfortably with one hand, whereas the “Command” key on a Mac keyboard is where the “Alt” key is on an IBM-compatible keyboard, making it easy to hit T with my left middle finger and COMMAND with my left thumb. The problem is that Safari’s “new bookmark” button is a plus sign, which is the prominent glyph in Firefox’s “new tab” button, which means that I’ll sometimes accidently try to bookmark a page instead of opening a new empty tab. I’ve moved the button in my Firefox toolbar a little (it was just to the left of the address bar and is now left of the “print” and “email” buttons), so we’ll see if that solves my problem.