I have three old ladders that I was going to throw away. Then I saw a garden photo that used brightly painted ladders as trellises, so I'm going to use them in my squash bed this year. I have some bird houses that I built and painted, so I might top each ladder with a bird house.

Granny

Here is a link that might be useful: Annie's Kitchen Garden

Sticks! I used fallen sticks last year to trellis my peas and some beans. They worked just fine, but you have to figure out how to lean them just right.

I came across some old wooden pallets, some up to 8 feet long. They were held together with some 4" x 5" beams. I have taken all the wood cross pieces off, and will be sinking them 2 feet into the ground. I plan to add nylon trellis netting and growing winter squash and pumpkins on them. I will be adding some cross braces to the verticals and tying slings as necessary to the cross braces.

I plan to paint the wood to help preserve it for a few extra years.

Mine was simply to bolt 2x4s to my beds and attach netting to it. Not very creative, but cheap and functional.

I used to do a lot of tree trimming and kept the straight green branches & then would look for willow or cornus for color and weave that in, or gold parachute cord, or ribbon or whatever the artist friends had laying around...

Dan

I picked up (freecycled) an old futon frame from the side of the road. I removed the brackets from the ends and it is now 2 6ft tall 3ft wide trellises. One for Acorn squash and one for cukes.