Here's my rickety little garden :) The paper blocks out the light and kills whatever is underneath. It's actually quite sturdy, the fence parts are sunk into the ground, then the bricks do the rest..and once there is soil in there that will solidify it further. Since I used an X pen at one end, there's a little gate so I could walk inside if I wanted. However I shouldn't have to do that much, I can lean over and reach any part of the space easily.
Hoping tomorrow a.m. I can get to Home Depot and buy some soil.