While I was transferring files last night, I noticed that I was nearing the end on of my room on the external card on my phone. Since cleaning off my card has been on my long to do list for a while, I figured it was about time to actually remove files. Some of the files are left over my three phones ago and are related to apps that wouldn’t run on my current phone. I used my extra card for apps because the phones had no room on them. I also realized how many files that I had viewed at some point were still on my phone and left lots of orphans. 
I need to go through the downloads on all of our computers also.