Classic Radial Moire - FREE DOWNLOAD!
I've discontinued making these because it became difficult to make large quantities of them consistently, but making just a few of these yourself is totally doable. You can use either an inkjet or laser printer, and print on clear transparency film (look for it online).
You are free to download the Jpeg and Illustrator files and do what you like with them. Donations are accepted via Add to Cart.
JPEG - https://drive.google.com/file/d/17UoOFqLqr5W7o91pnSGc1mEE1J3PqqVD/view?usp=sharing
Adobe Illustrator - https://drive.google.com/file/d/1eaNyPtQbkwTZRA-lDf7o0HmGjjeFLuOn/view?usp=sharing