Star Trek: 18 Easter Eggs In The Lower Decks Season Two Trailer
10. Inflicting Deep Cuts
The Cerritos crew beams down to a museum containing what must be priceless artifacts, including some recognizable weapons:
There's a Klingon bat'leth and mek'leth (Worf's double and single-handed blades), an Andorian ushaan-tor blade from Enterprise's "United", a Vulcan lirpa from TOS' "Amok Time" and Enterprise's "The Forge" trilogy, and a Jem'Hadar kar'takin sword from Deep Space Nine's "To The Death".
The deepest cut of all, though, comes not from these assorted swords and knives but from the painting next to them. That's the uhhhh proto-Vulcan-influenced(?) portrait Captain Picard painted in Star Trek: The Next Generation's third season episode "A Matter of Perspective".