[see the full blog post for Step by Step instructions]
Here are some of what you can and can not make an icon for with CocoPPa.
EDIT! Thanks to those who told me about this…
You can make an icon for Music & Maps.
When setting up the Link, choose “URL” & put in the following URLS
Music —— Music://
Maps ——- Maps://
And below is what my Home Screen looks like with all the icons I made with CocoPPa.
On the 2nd page, I made a folder of all the Apps I made an icon for with CocoPPa.