If you have completed a photo project and you are looking to try and sell some of your work, then it is worth taking your portfolio around to local coffee shops and bars to see if they will display your pieces for free.
Partnership
Often bars and cafes are keen to help local artists by giving them a platform to display their work and the favour works both ways. They get collections of work to decorate their walls without having to pay for them, and the artists get free wall space with guaranteed visibility and footfall. If you choose both the place and the project wisely then you should be able to target precisely the audience you want to.
Frames
Give a good deal of thought to the frames you want to use. Often the proprietor of the bar or cafe will want a say, or they may just give you simple criteria like a colour (usually black picture frames are acceptable) or a size.
If they leave the entire thing up to you then remember that the chance of someone buying your work rests on the effect of the photo and frame as a whole. Choose something that works with and enhances your work. Window mounts are great at lifting pieces, and try to keep things simple by opting for straight, aluminium or wooden frames.