So I've been getting these random token amounts of money in my letterbox every month or so for the last few years ever since I've moved in to my property. The amounts vary from 2 dollars to 20 dollars and there is no letter or anything else placed in my mailbox.
Personally I don't mind this too much but it's creeping out my significant other. Anyone else had any similar experience or might know what this money is for?
Update: Thanks for all the ideas and suggestions! My significant other and I have decided to pool together 200 dollars and donate it to a charity (thinking MSF atm) as well as keep any further money for donation purposes. We'll keep the receipts just in case the person ever makes himself known.