Half-inch wide, foot long lenths of aluminum strap, 1/8" thick. Coat one side with contact cement and while it dries, prepare a label with a Dymo label embosser. Peel the protective strip off the back of the Dymo label and affix to the contact cemented area. I've used these in the open garden for a good twenty years and they're still going strong. Major drawback: I cut my aluminum strapping with a bolt cutter and it leaves sharp points at the cut. These can lacerate the gardener. Solution: file down the sharp points. Minor drawback: I'm not even sure if Dymo label makers and the tape for them are still on the market. -- Rodger Whitlock Victoria, British Columbia, Canada Z. 7-8, cool Mediterranean climate