Now, that we established the fact that I am a selfish knitter (and have no shame about it) here is an other thing I've knitted for someone else.
Luca (of Barkafonal) asked me late last winter if I have "any handspun natural colored yarn"
"No, but I can spin some. Why?" I answered.
"Because I am getting married, and I would like to knit or crochet something for my wedding dress."
There she was in the middle of a store full of yarn, an she is asking for my yarn. I was moved, and didn't even thought of saying no.
Then we agreed in which fiber, what thickness, and I spun some 7-800 meters of laceweight alpaca/silk for her.
The "thing" she planned for the wedding was not made at the end (because of the sudden move of the store I think), but the yarnshop girl didn't had to marry without wearing a handknit, because a few days before a big day, I presented her... with a pair of elbow length lacy glove.