The Carnival - S1-E3
Visible crew/equipment: Near the end, when the clowns are performing their act for the Waltons, the monkey's leash is visible as it makes it way across the tightrope, before jumping down.
The Recluse - S6-E3
Visible crew/equipment: Near the end, while John is working alone in the mill Ben shows up, and when Ben asks, "Need some help," a crew member is hiding behind the stack of drawers, toward the right side of the screen. It's not Zeb or Easy or any family member. (00:46:30)
The Reunion - S1-E14
Visible crew/equipment: After Miss Emily tells her sister to serve some more Recipe to Homer and Zeb, when it cuts to the Walton house the set's lighting equipment can be seen at the left side of the screen. (00:15:45)
The Secret - S4-E16
Visible crew/equipment: After Jim-Bob finds out of the truth at the Hall of Records, when it cuts to Godsey's the two white tape marks are visible on the floor where Ike places the long grabber tool, as well as the two black tape marks where Esther and Ike will stand. (00:37:20)
The Burnout - S4-E18
Visible crew/equipment: After Olivia tells Erin to try being Erin Walton again, when it cuts to the boarding house a white tape mark is visible on the rug, where Mrs. Brimmer is about to stand. (01:26:40)
Visible crew/equipment: After Olivia gives Elizabeth her doll with the newly sewn dress John-Boy walks in, and just as he sits down beside Olivia the set's equipment (presumably lighting) is visible at the left side of the screen. (00:09:35)
Visible crew/equipment: When we hear Earl Hamner's voiceover at the start, the shadow of the camera crane is moving across the trees, as the camera pans from the Walton house to John at the new mill. (00:01:25)
The Return - S6-E20
Visible crew/equipment: When Hank gives John-Boy a lift home, he opens the rumble seat and places his bags inside. During the drive, a crew member's hat is moving around in the rumble seat area, at both the left and right sides of the screen, particularly the left side. (00:14:00)
The Return - S6-E20
Visible crew/equipment: When John and his son visit Mr. Guthrie at his home, just as Verdie opens the door to the study, behind Mr. Guthrie the black T-mark is visible on the floor at the left side of the screen, where they will all stand shortly. (00:33:00)
Visible crew/equipment: When Erin and Elizabeth help Daisy unpack in their bedroom, just as John-Boy walks into the room, the lighting equipment is visible at the left side of the screen. (00:20:55)
Visible crew/equipment: After Zeb tells the girls that the old dog, Sam, just wants to find a place to die in peace and dignity, when it cuts to John and Willie working inside the mill a crew member (wearing a red, short sleeve shirt) is hiding, toward the right side of the screen. Then after the shot of the girls on the hill, at the start of the next shot as the truck drives up, a bit of camera equipment is visible at the top, right side of the screen. (00:43:00)

Visible crew/equipment: When Jason and Verdie go back to the Unwin estate and this time are accompanied by Zeb, they are told that Miss Unwin is at the greenhouse, then just as Jason drives on ahead a few of the crew's modern-day trailers are visible at both the left side and the right side of the screen. (00:39:15)
Visible crew/equipment: When Zeb pulls Esther into the living room with everyone else and begins to talk about Erin's entry into the contest, in this wide shot the lighting equipment is visible at the right side of the screen. It's visible again when John hugs Erin in the last shot of the scene. (00:25:00)
Visible crew/equipment: After Miss Mamie tells Miss Emily her idea about changing the order for turning out of the lights, when Miss Mamie turns off the second lamp, as she walks back to the third lamp the two white T-marks are visible on the floor, at the bottom left side of the screen. (00:17:50)
Visible crew/equipment: While John-Boy is in The Chronicle office writing about Oldfield in his journal Glen walks in, and just as Glen tells John-Boy that he had nothing to do with the cancellation of the mill contract, the white chalk T-mark is visible on the floor near the door. (00:42:40)
Visible crew/equipment: While Mary Ellen is sitting on the couch reading Gone with the Wind during her break, when David walks in and sits down beside her, the shadow of the boom mic is moving around on the wall, at the right side of the screen. (00:16:05)
Visible crew/equipment: When John-Boy and Jason drive away from Ike's it cuts to Jim-Bob searching for parts at the junkyard, and as Erin walks up behind him the plastic T-mark is visible on the ground where she stops. (00:07:55)

Visible crew/equipment: While Esther is on the porch pouring the lemonade for Ep, when John-Boy asks Ep for the interview we see a crew member, who's wearing shorts, at the right side of the screen. (00:03:55)
Visible crew/equipment: When Jim-Bob drives Ruby home, after she kisses him we see the bulging outline of the mic transmitter and its wire on Ruby's back, as she walks toward the door. (00:23:25)
Visible crew/equipment: While talking about the tree and where to put it, when Olivia admits that half the fun is in the planning, the T-mark is visible on the floor near the stove. (00:08:05)