I'm not an experienced grocery store worker or a professional artist and therefore feel well qualified to offer these insights...
Approach this project with a helpful heart.
Be Selective... If a brand has been around for over 100 years, they don't need your help as much as a new up and coming brand.
Be Considerate. Always wear a COVID mask when entering a public space.
Efficient Timing. In case you need to leave early, try to schedule it so you do your volunteer labeling work near the end of your visit and not the beginning.
Shop there, just bring scissors with you. Snip, snip, fixed it!
How about nobody shops there, they go out of business, boom! , fixed it!
Both boycotts and scissor snipping are old and broke. Why not put your creative skills to use and create your own labels?
P.S. - This approach not recommended for residents of Manchester, New Hampshire.
I’m intrigued. Do you have photos?
https://i.maga.host/OTUIzpQ.png
@Mathic - Sorry, I don't have photos, so I mocked up what I see as a good starting place.
I'm not an experienced grocery store worker or a professional artist and therefore feel well qualified to offer these insights...