Where can I find zip files of test data preferably containing hierarchies and text files?

Looking to test the crap out of this make-shift file-management solution which we inherited. I have a bunch of live data to test but all the files are massive, takes too long to test and optimize.

i need smaller files to test, but lots of them because of the recursive functions i need to test. and I dont really want to manually do it. I'd also like to have potential sample-data resources for the future.

Does anyone know where one could download .Zip files with loads of folders/subfolders and text files/small media files inside of them for sample data/testing purposes? or something similar?