More to explore:
burlap used in planter
DIY succulent planter tutorial - diyshowoff.com
PVC Pipe Strawberry Planter
tractor wheels turned planters
...added brackets to the front and laid a wood plank atop them. They support lightweight fiberglass planters filled with flowers. This would be great on the garden shed.
Pipe Succulent Planters
Tree trunk as planter stand ~ Great idea for landscaping...