A tiny seashell I found yesterday is now a piece of "modern art" on my (circa 1980) model rail layout.  

The bronze sculpture "Counterpoint" (1959) is by renowned local artist Hermione Boot and is mounted over a wishing well that supports local charities in the town of Dent de Lion...

The seashell is glued to a piece of dressmakers pin, which in turn is fixed to a small plastic reel of some sort that I found on the ground, possibly from a tape cassette.