Young Will Riker holding a fishing rod
A fishing rod was a tool used to reel in fish while fishing.
In the 23rd century, young Ash Tyler was photographed fishing with a fishing rod. (DIS: "Will You Take My Hand?")
In 2344 while fishing in Alaska, a nine-year-old Will Riker lined a fish, but his father Kyle Riker took the rod from him and reeled it in for fear Will would lose it. Will held onto the memory and photograph as representative of frustration he had with his relationship with his father. (TNG: "The Icarus Factor")