Old cotton sheets, torn into strips.
They don't cut into stems, are free or really cheap, and at the end of the season go on the compost with the plants.

This year I have been using 20 year old long underwear, cut into strips. Last year used old t-shirts and a worn out jersey sheet. Something with a little stretch is good, so it doesnt cut into the plant as it continues to grow.

This year I am I am tying tomatoes with surveyor's flagging, which is a thin plastic tape about an inch wide. It is convenient, since it comes in a roll, which needs no preparation. It can be purchased at office supply stores.

For most purposes I use baling twine, a huge roll of which has lasted many years.

Jim

Saw some interesting ones on Farmtek. I've never used them though. They do sell many things in bulk and you can always just use them as a research tool and then search more based upon products you see.

I like these by Lee Valley

Here is a link that might be useful: Trellis Strips

Green floral wire. Snip and twist. 1 roll lasts years.

pantyhose (nylons) - easy to purchase one pair for 100s of ties when cut up (sometimes at yard sales or thrift stores in unopened packages for $.25 -$.50

old tshirts - cut in strips. One year I used hubby's old blue with thin white stripes, which didn't blend in as well as my son's old beige shirt, so I switched back to pantyhose.

The pantyhose is my favorite. I remove what I can in the fall from supports with a scissor or knife. In spring when setting them up again I pull at the remaining. What stays I just leave on the wire. Eventually it comes off & is nearly invisible.

One year I used a red t-shirt cut into strips, I will never do that again. You would not believe how many times I thought they were ripe tomatoes at first glance!

My vote goes in the old t-shirt column. Been doing that for years. And when you dismantle your garden in the fall, it all goes on the compost heap.

nylon footies