I would like to move the eyedropper tool to the left end of the InDesign tool bar. Is that possible? Thanks.
Long and short answer: no.
Adobe's interface customization doesn't extend to individual buttons. I haven't kept up with the status of the Adobe Configurator app, which would allow you to get closer to what you want, so I can't say whether there is a currently available version compatible with your version of InDesign, but it might be worth checking into. Also, just tapping the I key to get the tool is a pretty handy habit.
Thanks so much. I did not know about the keyboard shortcuts to the toolbar. I just pressed every key on the keyboard in succession and watched the tools light up ... so now I know them all. Thanks again. This will sure save time and mouse work.