Because it's hard to remember where you got every single brush, texture or anything else from when you make an icon we will just list all our resources in a post. Like this everyone gets the well-deserved credit and people who are looking for resources to make their own icons can find some good places to look for them here as well. This is nimry's resource list:
If you've recognized something on an icon that was made by you but you don't find yourself listed here please just leave a comment and I will immediately give you the proper credit. I am of course not intentionally taking anything without crediting the maker but it might have gotten lost while exchanging resources with someone else. My apologies if that happened.