I recenlty reorganize my sewing room and found I bought 4 copies of this one pattern because I wanted it and thought I had it but wasn't sure-during the "patterns are .99" sales at JoAnns.
I used to make dolls and stuffed animals and would buy an extra copy of the pattern when they were $1 because it was so annoying when I'd lose an important piece of the pattern. So now I buy 2 copies at a time when they are on sale.
Great until I realize that I've bought that pattern 2 times-4 sets of the pattern is a little too much.
Then what about when you find something you don't remember buying?