Surely an electronic wrist watch is fine, and maybe an mp3 player. Also graphing calculators.
This was some 20 years ago, but
- iPods? Taken away
- didn't have fancy smart watches, so those were fine. But I'm sure a modern smart watch wouldn't fly
- graphing calculators were fine. Just don't make it too obvious you were playing Pokemon Red on it.
Do graphing calculators actually help people learn? We used them in high school, but when i needed to take calculus in university we didn't use them. I'm doubtful they are good for learning especially when trying to teach the foundations.