Confess I usually have one. Helps me drift off to sleep on noisy nights or with snoring tentmates. Sometimes dig it out for that final grind to the trailhead, especially when I have to make double-time or it's a nasty horse highway. Good time to catch up on my podcasts, as I'm always way behind.

Weights a scant few grams, so penalty-free.

Cheers,
_________________________
--Rick