What's This Gizmo?

This is on a 2018 Speedmaster. I posted this question in the tech section a few weeks ago. No one had an answer. I'm posting this in the Bonneville specific thread since the Bonny probably has one of these too.

Anyone know what purpose this thing serves? It's plastic and clips on by the left side air cleaner housing under the side cover. It's a tool of some sort. At first, I thought it might be a fuse puller, but it's not. It has no means to grab a fuse. Toothbrush holder?