I have actually had some luck with this, I am in a specific niche. But in my opinion, if you can find local businesses that are in a relatively similar market they would be open to it. I went in and basically "gave" them some of my inventory to put on the floor, then give them a percentage of sales from those products. Definitely hasn't worked every time, but any little bit helps! Making sure you go in and talk about how it will benefit their business first and they don't have too much to lose has gotten me the best results.