Settings > Theme (may take a few seconds to load) > Screensavers will take you to screensavers for your Roku model from which to choose. The ones from Roku and a few others are free, most are not. Some are free but have purchasable add-ons like time and temperature displays. Most give you the chance to view screen shots before you choose to install them.
You may find some additional screensavers via a search in the Channel Store. Some are from Roku, most are from other sources.
Hi! @Rich1112,
Thank you for reaching out to the Roku Community!
Using the steps below, you can browse and change screensavers from the Settings menu.
Please feel free to let us know if you need any additional assistance!
Thanks,
Arjiemar