Found this on the ground today in the approximate location where I park the Freewheeler when getting ready to leave. Looks like a drum brake adjuster hole plug, so I don't even know if it's off the trike. There doesn't appear to be anything missing on the trike or my '99 Jeep Cherokee. Couldn't find anything in the parts schematics I've got, so thinking it may just be one of those odd items that turn up on my property periodically.