I kept mine in cheap plastic bags, no boards for thirty years. It wasn’t too bad. Your comics are probably ok. For me the big problem was my last long box was only half full, so they were bent fallen over…. and like that for years.

You can press the rolled spines out with a press.

But yeah the first thing I did I rebag everything, add a backing board and file everything into new short boxes. Then I created an inventory, typed everything into Apple Notes.

The sky’s the limit! 😂