Not an inlay. Talking about the actual hardware being a trunk. Like the cat pen someone made where the clip was the tale of a cat and the band that separates the two wood pieces had kats engraved in it.
In addition to the aforementioned inlay kit, Exoticblanks has an elephant-themed Rotocrylic blank. I've made a number of these in other patterns and they make a really nice looking pen. If you're only making a single barrel pen, the second blank blanks make great seam rippers or other projects.
Nobel, intelligent, and sentient, the African Elephant is the largest land animal on Earth. To celebrate him, Jeff has drawn a single elephant trumpeting with upturned trunk and set him in a lush swirling mix of two-tone green resins.