Begging in Cuba
Begging is not generally common in Cuba.
(But has started to appear at some of the main tourist spots like Havana Vieja).
But its extremely rare to fine anyone begging in Viñales.
We suggest you don't give money, pens, gifts, sweets, soap to clothes to anyone on the street. This encourages begging and could result in the imprisonment of the Cuban by the police for hassling tourists.
In the end, it's up to you; however if you do want to help, the local school or the church priest will ensure your gifts get to the poorer families.