Duracell

CopperTop AA, Carton of 96

$105.88 for 96

Don't wait until the day before the season to get batteries. Many years this was the one thing Riley forgot, and then you're stuck paying big prices at the local corner store instead of getting them from Jeff Bezos a couple of weeks out.

Six Voodoos at four AAs apiece and four flickers at three is 36 batteries before anyone's spare, and the spinners run all day. A carton of 96 CopperTops, four 24-packs, covers a season with margin, and they keep ten years in storage. Order it in August.