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I have mine from all my grades from primary to high school. My father wrote an analysis on the back of one after the term had ended and what I could have done for the grades to be better: basically to make tiny little improvements consistently throughout the year. I have come a long way but I still try to follow it.
You may also look into Link cables that are sold for VR headsets like Quest/Oculus. I had one at office for a VR project and while I did not use it for charging phones specifically, the build quality is great and takes physical abuses quite well, besides being not all that expensive.