Rebar use in garden

Today I got a free assortment of rebar (metal pieces used to strengthen concrete) I know I can use them for garden stakes. What other cool uses are there? Mine are assorted lengths....4, 6, and 8 foot lengths. The shorter ones are thicker in diameter than the 8 foot ones. I'm not sure any of them could be bent.

The place also promised me some concrete reinforcing wire I am returning for later. I'll have to add the kayak roof rack to transport that :) Any ideas for pieces approximately 3'x 10'? I'm thinking supports for peas but I bet some of you have better ideas than that!

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