found $350 just sitting there on the grass.
I had a similar experience; it was probably around 1992ish in Toronto, I was taking a short-cut with a friend through an alley way and he mentions that he once found a $20 bill in this particular alley so to keep my eyes open. This was an old part of Toronto and there were a lot of tall weeds growing up through cracks in the pavement and the buildings on either side of us. I spotted an envelope tucked behind one of these large weeds wedged up against the building. Opened it up and it was stuffed with cash! Turned out to be $1200 all in $20's. I figured it had to be dirty money; a drop-off of some kind because it was concealed, albeit poorly.