"Two small metal objects, found in southwestern PA via metal-detector. Not heavy, nearly the weight of a quarter. Initial guesses are gun-sights or hair/paper clips. Quarter for reference."
A: "They look like reeds for an accordion or concertina"
"They're oil absorbing pads and since oil floats on water the tube is there to stop the oil from flowing while letting the water pass under it"
I had to visit reddit to look it up... I feel dirty.