I’ve amused myself greatly messing around with a free application called Poladroid which is available for Apple Mac (Windows coming shortly apparently) that gives your existing pictures and photos that certain Polaroid instant camera look.
A large move-able virtual Polaroid instant camera appears on your desktop and you just drag and drop you pictures onto it and a virtual Polaroid print slowly develops before you eyes. Each of these Polaroid prints can be moved around the desktop and stacked.You can choose which treatments to keep and there are some basic preference parameters that can be adjusted. Completed photo treatments are labelled with a virtual chinagraph pencil type marking .
This Polaroid look could no doubt be achieved with any graphic programme of merit but Poladroid is just plain fun to use and has a very straightforward and easy to understand interface and should be applauded for that.