If you loved Chill Out, Scooby-Doo!, try Scooby-Doo! in Where's My Mummy?
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Joe Sichta, and they both carry the cozy mood tag, and they sit in Adventure / Animation / Comedy / Family / Mystery territory. If that's the register that drew you to Chill Out, Scooby-Doo!, the second film will land in a comparable space — through a different lens.
cozy
What Scooby-Doo! in Where's My Mummy? is
Hot desert midnight, the clink of a buried amulet. Van Helsing’s rival exhumes mummies by moonlight while a talking Great Dane sniffs out clues. A 2005 Saturday-morning cartoon in 35mm shorts.

