As Glenn mentioned, many of us go the other way--we use our trekking poles to hold up the tent so we don't have to carry tent poles.

Old tent poles (without tent) could conceivably be useful for quite a few things, and I look forward to hearing what you come up with.

And welcome to the forum!
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey