Gather your neighbours and start a rooftop garden.
You may live in a high-rise, or a two story walk-up over a store. Either way, that flat expanse of roof offers the perfect opportunity for a garden.
Start with herbs and a butterfly garden, then tomatoes and zucchini, then potatoes. Lots and lots of potatoes.
You can do this by creating raised wooden planters, if you’ve got the budget or the volunteers, but you can also gather food grade buckets that are destined for recycling from local restaurants and bakeries. Some will charge you a few bucks apiece, others will gladly give them away. Alternately, you can also buy them at hardware stores… just make sure that they’re food grade, and haven’t been used for any non-food purposes.
You could also ask local businesses for donations (say, soil from a local supermarket or garden centre) in exchange for a plaque in the garden and, if you’re a co-op or a larger building, a mention in your building’s newsletter.
(Firehouse Subs sells their used pickle buckets for cheap and donates the proceeds to charity, but I’ve been told that the smell of pickles simply will not come out. That may be less relevant with gardening than with storing food, though.)
You don’t need to mention the fact that we’re about to be plunged into a second Holdomor, although if they’re leftist, uttering phrases like “fighting food insecurity” will likely get their attention. Odds are they don’t realize how close to home that’s going to hit.