All you need is a small amount of vertical space around a balcony or an open window which can hang or store a vertical array of drink bottles that can grow all your herbs and lettuce easily. Recycle as many of your plastic drink containers.
"""Put strawberry plants in concrete blocks edging a garden."""" --------->Put plants that naturally repell garden pests like marigolds? Also, cinderblock beds a good idea for around fence. Maybe use concrete stain to make them more natural looking?
DIY hanging planters - (the link is for purchasing) - this is easily a DIY project - made with two liter soda bottles painted and holes punctured and threaded with fishing line, or even jump rings through the holes and decorative chain to hang with.