I have a junk drawer with easily 12-15 old unused phones that I just ignore. I am sure today's kids can easily get their hands on a junk throwaway phone to use

I have a junk drawer with easily 12-15 old unused phones that I just ignore. I am sure today's kids can easily get their hands on a junk throwaway phone to use as an "attendance" marker if that is really the rule (while still keeping their actual functional phone with themselves).