My now husband gave me a present on our two year anniversary of meeting one another. The present was in a ratty old gift bag that had been floating around the house for months. I didn't think much of what was going to come out of that bag. There was a ton of tissue - I kept pulling and pulling it out of the bag. But inside the bag I found his 5-year old son's training wheels that we had recently taken off.
Attached to the training wheels was a very long string. As I was pulling on the string, he sat down at the kitchen table with me and said "I think it's time we take the training wheels off. I want you to be my wife forever." At the end of the string was the perfect engagement ring. The kicker is that we met while riding our bicycles!