As in: The loose 60-watt bulb that just rolled off the linen-closet shelf and shattered at your feet.
Keep bulbs in the original packaging. It will protect them from breakage, says Anne Guertin, a spokesperson for Sylvania. This is especially important for compact fluorescent lightbulbs, which contain mercury. If you’ve thrown out the packaging, place bulbs in a shoe box lined with bubble wrap or tissue paper. Temperature does not affect the performance of bulbs, so you can store spares in the garage or the attic if you don’t have room in a closet.