iZotope are offering a couple of their plugins free, the delay only until March 10. You do need to create an account and activate the plugin once installed, but I'm having fun with the Grain delay chain
https://www.izotope.com/en/products/eff ... mic-delay/
The other is their vinyl plugin which appears to be free indefinitely:
https://www.izotope.com/en/products/eff ... nts/vinyl/