OK - while technically not in Sarnia, Pete's Place is a must-do when living and surviving in Sarnia. Located off of Station Street in Petrolia, Pete's Place is half-rummage sale, half-junk yard. I don't know the full story on Pete other than he is some wild collector (so I assume he's half mad) with a large warehouse stuff to the brim with everything and anything.
It was our second time out to Pete's (the first time we bought vintage matchbooks). Our score: a vintage, cherry red Samsonite weekender bag for two dollars.