When your son mysteriously loses his sunhat?
You just sew a new one!
And make it reversible, so the little guy has a fancy match for every outfit.
I used the free Reversible Bucket Hat pattern by Oliver & S. The size "small" is perfect for my 9-month old.
It's just one of those quick, lazy-sunday-afternoon sews. And a great way to use fancy pencil fabric and fluo yellow thread!