I got tired of manually copying and pasting banner ad .swf files and backup images from my working directories into a deliverable .zip file, so I made a Python script to help me out by grabbing the right files and zipping them up. Take a look on GitHub
I am more familiar with JS and PHP, but this one liner sold me on Python:
for root, dirs, files in os.walk(deliverables_path):
os.walk() made this an easy way to move through the directories and grab the right files.