#1 here. This time of year in Japan, and through early May, you will see everywhere carp streamers ("Koi Nobori") flying from roofs and poles. They are a celebration of the boys in the house, so that they may grow up big and strong. We happen to have a small set (they can be enormous!) that I bought in Tokyo a couple of years ago and it went up today in celebration of the three Poupounette boys, Tommy, Yuusuke (Yuu-Chan) and Ebisu (Bibi-Chan).
Yuu-Chan climbing up to investigate:
REALLY BIG Koi Nobori in Japan!