Raised Bed Garden Made Out Of Cinder Blocks
This is quite a cool idea, because forming a small plot with cinder blocks will allow you to grow a small garden without affecting the rest of your backyard. The idea is to surround your chosen area with cinder blocks whose holes are up and then fill the area first with newspaper or cardboard and then soil.
You can also use the blocks to plant smaller plots with flowers so you have a decorated border to your small garden. source