Found Meta Glasses

I found a pair of Meta glasses at the beginning of the year, and I would like to find the owner. I’m just not sure how at this point. I’ve tried contacting support and the automated chat said it’d send the info I have to the support team. But is there any other way someone might know of to find the owner information with the glasses? 
im a tour guide, so i mostly have people out of state/country on my tours so so posting on local forum could be a dead end, though I am in a stop where a lot of locals visit, the location they were makes be believe it was someone who took my tour but I contacted all of them and no one said they forgot anything. 
I just really want to find the owner