The original, undecorated wooden paddles were used for Hanetsuki, a game similar to badminton, but the ones sold at Hagoita Ichi are good luck charms for the New Year. The tradition says that you can hit the bad luck with them... (^_^)
EXIF info:
Nikon D90
Lens: 18-70mm F/3.5-4.5G
Focal Length: 18mm
Aperture: F/5.6
Shutter Speed: 1/200s
ISO Sensitivity: ISO 640