Kudos to you both for your efforts. I think the issue in its entirety seems overwhelming to many of us, but all the little things add up.
My effort lies in recycling. In addition to the usual cardboard/paper, hard plastic, glass, can and food waste bins available here I recently discovered the 'soft plastic recycle' box. To be honest I had seen it before but thought it was only for old grocery bags. Turns out you can put all soft plastics there so I have started yet another collection.
The area under my drainer is full of various boxes and bags but its a small price to pay for reducing the landfills. These days I usually have only 1 small bag of garbage a week to be collected by the city refuse truck.