Disc and APS cameras....purely because there is no film available for them and never will be again due to the complexity of the formats.
As for medium format, providing the camera functions it can be used today....even obsolete formats like 116 can be easily converted to 120. Other formats likewise or one can buy hand wound film...at a price but it is available. Nothing wrong with what is effectively a box camera, I bet it takes decent enough photos of people enjoying the beach just as it did when new. My Afga Syncrho Box is hardly the finest camera, not even the best box camera, but I took some lovely photos of old friends at my school reunion with it in July this year.
Even a non-functional camera might have a use, it may hold memories or look great on the mantelpiece....or in the case of the Braun Paxina I have at work with the sticky shutter, it is used to help teach kids about optics and focus.