Wedding favors are a detail. As a guest, I've definitely enjoyed favors, and I've also found them utterly useless and wasteful.
When they aren't there, I don't even notice.
However, I had an idea for favors that is actually really cheap to implement (and it's good for the environment), so we are going to make favors.
Since we're serving homemade guacamole at our reception, our favors are going to be handmade seed packets with directions for growing cilantro on the front (which is a main ingredient in our guacamole) and our guacamole recipe on the back.
We ordered bulk organic cilantro seeds and will use cardstock we already have. We're going to simply fold up the bottom portion of the cardstock, put the seeds in, and sew it up.
The seeds cost $21, so that's about 40 cents per favor.
It's still an unnecessary detail, but at least it's a cheap detail.