Here's a bright idea. A number of discs come with built-in lights for nighttime fun. Early on several AAA batteries were needed to power up the wee bulbs which were usually housed in nacelles accessed by removing several screws.
Later models take advantage of energy saving L.E.D. lights requiring the use of tiny button batteries. Some discs which have attached glo-sticks are used primarily for night Disc Golf.
If you are storing any of these in your collection, be sure to remove the batteries first so they won't corrode over time and ruin your disc.
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