Get something with two shoulder straps. If you manage to minimize as much as I have, on your best days you'll have a binder and a tablet. On your worst days, you'll have your binder, your tablet, your drug book, a textbook or two, writing supplies, highlighters, stethoscope, penlight, tape scissors, hand sanitizer, not to mention your personal affects. No need to kill your back before you even graduate. This coming semester, I'm aiming to have my cards in my phone cover, my keys in my pocket, and all of my writing done on my tablet, which I have a Bluetooth keyboard/cover for. On clinical days I'll do the same and tuck my supplies in my scrubs
and steth around my neck. Hopefully all of our textbooks are available electronically this semester. That will be the only potential downfall to my plan.