Welp, tried to unplug a tight USB cable and I managed to break off the charging port inside the unit! (It's on an ancient #Kobo eReader - a #KoboMini - but that's my kid's beloved Kobo and if it stops working, it's my head on a platter.)
Luckily the thing still charges if held in a very specific way, but I better start looking for an upgrade before it's all held together with three screws and wishful thinking. Sigh. Better make sure I can find a matching SleepCover too.