I was watching the SMDM last night on DVD.
It was the Bionic Christmas (Sam Walston - My Favorit Martian)
and (Dick Sargent - Darrin - Bewitched) were in this episode.
Steve pulls the old Dickens Christmas Carol trick on Sam to get him to change his Scrooge like ways. During the show Steve goes to the toy store to get presents for the kids. And on the shelf, in a close up even.
There is Steve w/SMDM on the shelf. I just thought it was funny.