There is the chinese ini edit forum which offers a large amount of ini edit codes:
Link 1. These forums are all in chinese, but you can navigate the site around using google translate (or similar tools).
2. One-time registration is required just to view the pictures in the thread. (some people from certain part of the world seems to have trouble with this part, not too sure about this)
3. To view the ini-edit code, one reply on the thread is required (just faceroll to type random characters and press enter)
4. Because of number 3, it is possible to identify which edits are most popular just by looking at the number of replies. (more replies on a thread = more popular).
5. Clicking on each thread might be tedious, use this
site, which compiles a bunch of popular edits into a gallery (not sure when was the last time it was updated). Each ini-edits will link back to a thread on the main forum.
6. Most edits are 'free'. Some of the more 'refined' ini-edits may link to an external site, which is not free (optional).