Loved these pics & reading this. I discovered rolled wire this year too. The kind I found is plastic-coated (green.) I've used the wire *as* trellis, between potting bench roof support posts, and up front porch posts for a moonflower vine. (Which worked, BTW, right there where it can be enjoyed first thing in the morning, last in the evening - not out in the back 40 where nobody goes when the flowers are open.) I wouldn't put a perennial vine there, that was awesome, I'll be doing it up every post if the seeds sprout at each one. Will take pics next year that show the wire. I've always used 30-lb. fishing line for this, but the wire is stronger and easier to deal with.
If rustic also means repurposed, I've used some pieces from a broken cart as trellises, and an oak branch. I figure whenever the branch rots out, the vine can just be 'leaned' on a new one, or that part can just be removed as cuttings to gift to others. A little Monstera plant came with a piece of board the roots were already attached to.
These are house plants, but the trellises are rustic.
This was a shelf, DH bent it into a tube. Philodendron 'Micans.'
Aerial roots of Philodendron scandens attached to oak branch.
The whole pot with a 'side' of the broken cart and oak branch - wired together for stability in high winds.
Mixed philos in bent-shelf tube trellis thingie.
Monstera in love with this board.