The medical facilities from Shore Leave if not other technology of the resort planet. McCoy dies from massive lance trauma and is brought back for crying out loud. Red shirts should go on strike for this technology.
Time travel from The City on the Edge of Forever.
Better warp drive from… was it By Any Other Name where the aliens take Enterprise to the edge of the galaxy?
Who the hell is Gary Seven and is he screwing around in our time line?
And from Next Generation…
Find out where those damn little crawdads come from and nuke the damn place.
Borg warp conduits. Voyager should have investigated this, but Admiral to be Janeway was busy looking for coffee. I don’t blame her.
And speaking of Janeway, what is this warp 10 business and turning into lizards? We better figure this thing out lest the gas pedal becomes stuck again.