When I used to have a wood burner, and lived where you could have a backyard fire pit, I would burn any PII documents. Now I live in a townhouse, so that's not an option.
Shredding can be cumbersome, especially when there are stacks and stacks of papers, that might include staples and paperclips. So, I came up with the idea to dispose of confidential paperwork by soaking them in a 5-gallon bucket of water for a few days. This breaks up the pulp and rendering them unreadable. Then I put them in them trash. (There was one time I had a lot to dispose. I didn't do it all at once, but kinda systematically over a period of a few weeks.)
Before a recent move, it felt "freeing" to finally get caught up on and minimalize years and years of paper tax returns, bank statements, cancelled checks (yes back in the day...lol), utility bills, etc. Now moving forward, I don't worry so much about keeping a paper copy of a lot things I used to anymore. I keep files of such things electronically, and backed up on an external hard drive.