Over the years my grandmother had faithfully sorted through her change and saved every coin from my birth year. She purchased a book for them and filled it up with all the coins she had collected. It was a sweet gift, she was always so thoughtful. Which makes the fact that I took all the coins out and used them to buy chocolate bars filled with carmel even worse. I've always felt guilty about doing that, and to this day collect any coins I find from by birth year.
Sorry Grandma!