This is an idea I had earlier and was posted I wanted to dress it up but well anyway if you take thick wood such as logs or long thick heavy branches it makes neat landscaping art trim them any way you want when you put down a box it can be with four roughly the same length in a square or a triangle and you  can do them anyway you want then put in a garden using whatever you have which can make it really cool and neat you might add fruit or flowers or make one around a tree you can do practically anything with this so just enjoy the look of wood is in and it is really hip. good luck with this one !!  I really enjoyed writing the guides if there are any suggestions you have for a guide along this let me know or maybe I can find out info for one and thanks.
Marc