If you loved Guardians of the Galaxy Vol. 2, try The Guardians of the Galaxy Holiday Special
A bridge between a film you've already seen and one most people haven't. The Guardians of the Galaxy Holiday Special has roughly 9.8× fewer votes than Guardians of the Galaxy Vol. 2 — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

Guardians of the Galaxy Vol. 2

The Guardians of the Galaxy Holiday Special
What they share
Both films are directed by James Gunn, and they both carry the playful, uplifting mood tags, and they sit in Adventure / Science Fiction territory. If that's the register that drew you to Guardians of the Galaxy Vol. 2, the second film will land in a comparable space — through a different lens.
What The Guardians of the Galaxy Holiday Special is
Christmas Eve, a faint sound of sleigh bells, a spaceship lands. The Guardians converge on a gaudy mall, Mantis and Drax in mismatched outfits, searching for a perfect gift. This special is a sugary treat best watched during the holiday season.