I always bring something and it depends on the people you think you will encounter.
As an example the ladies in Bhutan wear brooches to fasten their blouses. You can find these items at yard sales or your local thrift stores (I am collecting them now for a future trip)
Monks and nuns in monasteries can always use warm socks, woolen hats.
On a recent trip to Guizhou China I brought along sewing kits for the Changjiao miao.
I am also a believer in rewarding the special people who take the time to act as a model in better light or location, a small amount of money, at least to me.
I search for photos of the destination and see what the people are wearing, and most enjoy that special souvenir from your home country.
Take lots of Canada pins. In Pakistan the Kalash girls used them for ear rings.
I also brought along some playing cards and finger puppets for children when in China.
Hats and or Tee shirts for a guide, Lipstick ( dark colours) and ear rings, large hooped ones.
Part of the fun in planning your trip.
Have a great trip,
Kieron
Vanishing Cultures Photography