Sarcastic version -- I always liked suspension straps so I could spread eagle over the work -- induced a sense of falling, which kicked in the fight or flight response in me causing me to focus like a mofo and retain the info -- administration didn't go for it when I wanted to install one to take my tests in, but hey, I tried ---
Serious version --- I'd probably try to simulate testing conditions so I'd get a decent chair with a firm back to avoid back issues later on, a good desk with a lamp. I used to be a "kick up the jams" kind of studier (Van Halen was one of my favorites) but when I got to med school, I took umbrage at a fly farting anywhere in the room, so I bought the earmuffs that they use for ear protection when sport shooting -- my school was cool with me bringing them in but they had to search through them each time to make sure no crib notes were in them. COMLEX testing centers will issue you earmuffs so it's not like you won't have them on gameday.
Printer wise -- yeah, I'd get one but recognize you're going to be going through a lot of printed material and ink replacement may make it more cost efficient to use the schools printers in the library and just keep reloading your "printer" card. We used to print powerpoints 6 - 12 to a page, double sided and just carry those everywhere going over the material over and over again.
I agree with breaking up the study time -- right now, I think I'd be figuring out when I studied best (AM/PM/evening) and then break up my run errands/workout/sleep time around that -- Going to class -- see if you get any benefit from it and if not, don't hesitate to bag it.
I used to study sprawled out on the bed with a big pillow under my sternum -- it was comfortable as heck, I never fell asleep and once I got in the zone, I was good -- one word of advice --- make SURE you're doing practice questions of some sort while studying, even in MS1 -- UWorld/Comquest come to mind -- they'll royally suck at first and you'll feel like a (as Bugs Bunny says) maroon, but it'll get better and you'll spank the exams soon enough, to say nothing of Step1/Level1
A little off topic -- but remember, it's about training your mind/body in a familiar environment similar to test day to recall the information and apply it correctly --- take it from that perspective and you should be good.
hope it helps.