I was thinking of improving my python and just recently read an article about the python-fuse library. I'm always interested about filesystem stuff so I thought this would be a good library to hack on. 
What I can't come up with is an idea of what I should implement with this. Do you guys have any suggestions or ideas that you can share?
Mounting an xml file as a filesystem, where elements are directories, and their contents is stored as a plain file. The attributes are stored in an "attributes" file as newline separated  name: value pairs in each directory.
This would allow XML to be modified using the common shell tools. (sed, grep, mkdir, rm, rmdir, cat, vim,  etc...) An elegant solution would have to be found for multiple elements with the same name.
So it's a bit far field. You never said that it had to be a good idea.
interesting project that I can implement with fuse-python