Bryher's Community Association is looking for photos, anecdotes and artefacts from the episode of Challenge Anneka that was set on the island.
The 1990 TV show saw the team build a low water jetty - subsequently known as Anneka's Quay - a challenge completed a day late due to the bad weather.
Now Bryher Community Association will focus on the episode for its telephone box mini-museum following the success of last year's When The Whales Came exhibit.
Issy Tibbs wrote on social media: "This year’s display at the phone box museum on Bryher is going to be memories of the Challenge Anneka. Has anyone got any momentos/photos of it they would be willing to lend/donate?
"Last year’s display raised hundreds of pounds for the community association and it would be great if we could do it again."
There will be a different Bryher-themed display every year in the phone box, which the community bought from BT for £1 in March 2017.
Anyone wishing to contribute to the museum is asked to email Issy at email@example.com.