“I’m betting that our principles are going to keep us alive”: The Time Trap (Animated Series) vs. The Void (Voyager)

While trapped in isolated pockets of space, the crew of the Enterprise encounter a mini-Federation, while Voyager’s crew helps build one.

“He was an idiot”: More Tribbles, More Troubles (Animated Series) vs. The Trouble with Edward (Short Treks)

Tribbles return, in an episode of The Animated Series, and in a Short Trek that only feels animated.

“A little ship that took a little trip”: The Terratin Incident (TAS) vs. One Little Ship (DS9)

Honey, I Shrunk the Crew of the Enterprise (and a Runabout)

“Is there a John Luck Pickurd here?”: Yesteryear (TAS) vs. Tapestry (TNG)

Young Spock learns that the needs of an injured pet outweigh the needs of its owner, and young Picard learns that getting stabbed through the heart can be good, actually.