Whoa, trippy! 
I recall the Romulan cloaking device being used as the orb that some intelligences without bodies were sustained in, and Nomad was reused for something else, but I’ve not heard of costumes from other programs. Did they just prowl through wardrobe and junked parts looking for costumes and props?
Either that or it was just rented from a costume supply service. I’ve seen crossovers like this before, but can’t think of any off the top of my head.
One that may or may not be true: Frank Sinatra’s leather jacket in Von Ryan’s Express was supposedly the same one worn by Bob Crane in Hogan’s Heroes.
I remember reading at the time ST:TMP came out that several of the aliens’ costumes in the San Francisco scene were drawn and/or adapted from clothes long stored in the studio’s wardrobe backrooms, the oldest of which was from The Ten Commandments IIRC.
Captain Kirk spreads his arms out, and a gas nebula disperses.
“Catspaw” was aired Oct 27, 1967, and “Lovey’s Secret Admirer” aired 9 months prior, on January 23, 1967. Depending on actual filming dates the costume would barely be back from the dry cleaners before it got snagged.
Theodore Marcuse, “Korab” was killed in a DWI in November, 1967.
Kirk, his arms wide!
Heir, commenting!
Just watched “Flashback”, staring Dennis Hopper and Keifer Sutherland. Trek actors were Paul Dooley (Enabrin Tain), Cliff DeYoung (Croden) and Michael McKean (Fear).
The “Night Gallery” pilot movie had three Barry Atwater (Surak), Richard Kiley, who portrayed Gideon Sayitek (who thought he was God) and George Murdock, who portrayed God (sort of in ST:5 The Final Frontier (And Admiral Hanson).
I was looking through the list of long-forgotten TV series from the '50s on IMDb yesterday. Star Trek actors were all over the place, especially in anthologies. It was a great period for unknowns to cut their teeth, so to speak.
Just saw the late Anton Yelchin (Chekov in the J.J. Abrams ST reboot movies) as a grunge rock gofer in the vampire drama Only Lovers Left Alive. A small part, but he was good in it.
Vic Tayback played Jojo Krako in TOS “A Piece of the Action”. He played a bad guy in the Rawhide episode, “The Gray Back Hotel”.
Lola Albright from Peter Gunn is also in this Rawhide episode. A very attractive actress, I can’t decide if she is playing the role badly, or if I just type cast her as playing Edie Hart.
Lola Albright was the victim in “Fade in to Murder,” the 1976 episode of Columbo with William Shatner and Walter Koenig.
I remember her best as the gold-digger who tried to nail Jed Clampett on The Beverly Hillbillies.
How well did she act?
I keep expecting Pete to come in and kick ass.
All she had to do to go from frumpy to hot was let her hair down and remove her glasses.
Jed was too smart to fall for her guiles, though, and palmed her off to Jethro so he could dazzle her with his cipherin’.
I saw Joseph Mell in two different programs recently:
I played a (bad guy) scientist in an episode of the 1950s ‘Superman’.
He played a zookeeper in a Red Skelton program.
…how old are you?
And what’s Mell’s Star Trek connection?
Ah, never mind. I see: Joseph Mell | Memory Alpha | Fandom