I've had a few small finds in sort of odd places, and a couple really odd ones.
Coin show 1980 or so, before many coin dealers cared about cards. Found a silk of Baker.
Bottle show 1990's- Found a cubs coffee cup that's restauraunt ware. Maybe from the team or something?
Same show the next year - an oddball advertising set complete with the envelope and ads.
And the oddest ones---
Again probably around 1980. Walking home from the baseball card shop, I found a plastic page of 1948 Bowman football cards on the top in a trash can. P-G, but a waterfield rookie.
My brother came back from camp one time and said I should call a friend of his. They'd been playing softball and one of the bats had cracked
But he said it looked pretty old. Yep, old. Bon-Topper bat company from Hartford, with a Fred Parent signature burned into the barrel. Probably a game bat. I traded a Hank Aaron store bat they could use for that bat ,an old D+M bat and one or two other fairly rough condition bats that he figured were too old to use anymore.
Steve B