Boot Animations for Superuser - Apps on Google Play
GitHub - Koro33/BootAnimationMaker: A tool to combine the images (png, jpg ...) and motion images (gif) to make Android boot animations, and package them into a Magisk module
CyanogenMod 10 Boot Animation Available for Download - Android Authority
Boot Animation Factory - Download
Boot Animations for Android - Download the APK from Uptodown