A lot of the experimentations and projects I have done have been related to Image Manipulation with code.  One project that I started was working with PHP image filters.  Some of these filters can be achieved with simple built in functions, others are acheived with extensive combinations of the built in functions, and some are created from scratch doing pixel level manipulations.  The following thumbnails are an example of several of the effects I’ve created with nothing more than PHP code making use of the GD Library. 

Please note that there is no web interface to currently apply these filters to your own images however if I ever get time to get back to this I will be sure to let you know.