A script I wrote a little while ago to help speed up newforms-admin conversion.
From memory it works best when run from an old-forms installation, but it is still useful post-conversion. There are some features missing, but it's supposed to be a starter.
Just install this command and run: ./manange.py port2nfa > admin.py
(To install, copy the file to management/commands/port2nfa.py in an app somewhere)