When I proctor the exams I generally have a couple of extra calculators with me. If anyone ever needs one, as John said, ask at the desk and/or check with your test proctors.
I even have an extra D1.1 or two with me, no tabs, but it is better than not having it. I have loaned them out twice.
Having your own light is not forbidden and, as John has said, is far better than what they issue.
No audible timers or calculators with noise, equipment that can record, take pictures, store information, etc. More involved but you will get your instructions at the exams. And they will be watching, just ask anyone who has taken it in Phoenix while on my watch.
Portland, OR? My home country. By 07 I had been in AZ for 10 years though.
Have a Great Day, Brent