This year I'm trying to replicate the tomato supports I see many gardeners using. Two side poles and a crossbeam, with ropes supporting the vines. I think you just wrap the vines in the rope. Several gardeners at our Community Gardens use this method and I'll watch how they do it.
Lynda suggests to try Johnny's tomato clips. They seem nice. But I think if I need ties, I'll use strips of my old plastic shopping bags. They're free.
In previous years I have always used tepees for my tomatoes. These have worked well, but I think this post and pole design gives the plants more sun and air.
The lattice supports in front of the tomato set up are for cucumbers. The tomatoes are taking off now, growing fast, but the cukes are lagging - waiting for warmer days.
(I accidentally planted a whole row of weeds along the front of the raised bed. Please don't ask me about this - a mistake. Fleabane, that I thought was asters. They'll be coming out soon and replaced with lavender.)
tomatoes (Solanum lycopersicum)