Does someone have the code with all the skin IDs to post here? Would save a looooottt of time <3

No, there are like thousands of them :P but someone may share some of them. You can try adding some of the approved u like, but it's piracy :(

You might have the code but as your game inventory does not have the skin you wont get anything but an icon in your skin box, better to pay for what you want or go to the workshop and create your own,