Key for me is to "group" cables. For example, I have a bag of USB-C cables, a bag of USB-A cables, etc. Grouping them is key to deduplicating. It's easy to look at a single legacy USB A-to-B "printer" cable in isolation and think "I might need this someday!" Because you really might need it someday. However, if you group them you might see that you have ten of them. And then you can get rid of... maybe 8 of them. I a…
Pro-tip, use a hole punch on a corner of the bag. That way, once zipped you can just squeeze it to get the air out.