35mm film negative holders.

Does anybody out there remember these?  Does anybody out there still use these?  If so, I applaud you.  I haven’t shot a roll of film in years, and it kind of makes me sad.  It also kind of doesn’t.  I have some old film which I’d love to shoot and see what happens.  Maybe I can give Anabelle a history lesson in photography so she can understand that photos aren’t something you just take on your phone.