The Great Earring Caper - S4-E20
Continuity mistake: During the kids' ping pong game in the backyard, there is something white near Jan's feet that appears to be a spare ball. But in the very next shot, it's gone. (00:12:40)
The Great Earring Caper - S4-E20
Visible crew/equipment: The stage lights are reflected in Peter's magnifying glass. (00:04:00)
Answer: The dangling bracelet was used for dramatic purposes - to keep the audience on edge.