Whilst this is a personal decision, I strongly discourage trying to offload old worn out clothing and shoes in return for arts and crafts that have taken weeks to make, and or are of long-term emotional value. Not only do I consider it somewhat insulting, but in recent years cheap second-hand clothing is readily available thanks to the generosity of the church donations from the West! These items find their way to third world countries by the container load!
Bringing gifts for local children generates a “give me” society in which kids are encouraged to beg, rather than be creative, perform or make something to sell. Sugared candy rots teeth where dentistry is seldom an option. If you wish to bring pens, give them to your guide to be properly distributed within schools. Bargaining at a craft shop or roadside stand is a sport for many.
I have often cringed at the stories of wealthy American clients boasting how they have beaten down a poor vendor. Desperate for just one sale, a vendors will often be forced into selling their wares for less than cost of the raw materials he used. Those are my thoughts!