What about mirrors? @ai6yr asks:

Q7. Question for the #BikeTooter community: I've been trying to switch from driving to bicycling, and keep wishing I had a rear view mirror (as a speeding SUV comes rushing past my left side...)... thoughts on mirrors for bicycles? Yay? Nay? If Yay, what kinds would you recommend?

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@ascentale @ai6yr A7: I've used a tiny folding bar-end mirror for camp touring on a cargo bike, and it definitely helps. I could use a larger mirror (I have astigmatism and I'm not getting any younger), but I like that it folds away when I don't need it, so there's near zero possibility of it being damaged.
https://item.rakuten.co.jp/boma-plaza/qyh21090704/
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