You can create an opening at the bottom of the pumpkin to accommodate a light source. But if you opt for a lid, make sure you cut out a notch for hassle-free replacement. Angle your cuts inward to prevent the lid from falling in.
The light source you choose can affect the life span of your pumpkin. "Using a low-watt electric light instead of candles will reduce shriveling," says Gene Granata of Masterpiece Pumpkins
. Try the Pumpkin Powered Light
or Ultimate Strobe Light
from Pumpkin Masters.