Hi!

We have published Halloween apps for the TV - to have a spooky moving background (with audio) on your TV!

• (Android TV/Chromecast with Google TV): https://play.google.com/store/apps/details?id=com.dunitiapps.tv.halloween

We also have similar Chromecast apps for iOS and Android:

• iOS (iPad, iPhone): Halloween on TV for Chromecast: https://apps.apple.com/us/app/halloween-on-tv-for-chromecast/id1052525639
• (Android) Halloween for Chromecast: https://play.google.com/store/apps/details?id=com.dunitiapps.cast.halloween

They are for $0.99. Please do give them a try!