I have edited many of the images that I used in ways beyond just cropping them. A lot of time was spent in Affinity Photo doing these edits so that they'd look good inside the token ring. I believe that this would qualify as making them my own. However, I'm not a lawyer or an expert in copyright law and maybe that doesn't count. I'm reality, I don't have the resources to pursue any legal action against anyone and wouldn't really want to do so either. What I do know is that I spent a lot of time and energy curating thousands of images and then editing hundreds of them to create the tokens. So at very least, it'd kinda be a jerk move to take them and apply them to some commercial projects without my blessing. If someone wants to do that, I'd encourage them to instead look for the same or similar public domain images and create their own tokens.