There are a gazillion varieties of eggnog, with varying amounts of fat and calories. For some folks, eggs and milk cause stomach troubles... but the faux eggnog just isn't the same.

One cold drink that could fill the niche of eggnog:

Rumchata

2 parts horchata (or rice milk)
1 part coconut rum
cinnamon or cinnamon schnapps to taste
ice

No lactose, no eggs, no fat, vegan, and fewer calories. It was never meant to be an "eggnog" so it doesn't disappoint.