Post flyers in your neighborhood
Whatever you're planning or recommending, you can inform your neighbors in an old-school way.
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As seen on Bluesky:
Someone attached flyers to utility poles in Chicago. This is an old-school way to get the word out. Whatever you're planning or recommending, you can inform your neighbors this way.
If you include a tech component like a website or QR code, the initiative can be traced back to you.
But if you don't, then maybe it can't.
Consider not relying solely on a QR code to convey info since some people don't know what a QR code is or won't trust it. Include a backup option for people to contact you or to get more info.