The Block Coding Archive is a group dedicated to preserving the history of block-based programming. This website hosts what we've found (and been allowed to share) so far.
Since Neocities does not allow any file types other than those that they have allowed to be hosted on their servers, I have appended each non-HTML file with .html. To download these files, simply right-click on them, hit "Save link as...", and remove the .html file extension when saving.
All media hosted on this website was courteously donated to us by the MIT Media Lab themselves, and totally wasn't stolen from one of their (hidden but accessible) subdirectories.
Before you ask, yes; I know this is not a "real FTP".
Enjoy!