Most cities have mandatory recycling and every bit helps. You can put things out to be picked up or you can reuse many things in new and unique ways. You can also recycle by giving things away to those that may have a purpose for it, especially artists who create in mixed media. Less landfill and sorting! I love it when any friends or relatives contact me before they dispose of certain things. Let people know if you have a need for something for your arts such as bottle caps, bottles, cans, etc.
Contact your city to see if you can start a community garden if none exists in your area. Keep in mind that you will need to be able to water during any dry spells.
If you do not have a yard to garden, try pots or any containers, preferably outside, though I have been known to grow indoors with proper sun or grow lights. I have recycled many containers such as gallon paint cans, washed and holes in the bottom for drainage. You can use old tea kettles, garbage cans of any size or tubs I find at yard sales for a good price. Just be sure you are able to make drainage holes or your plants could drown with too much rain.
Don’t allow smoking near your garden due to possible disease that is spread to tomatoes and other plants. Smoking sucks anyway you look at it. Very irritating and aging to the body and a waste of money.