Certain human NPCs are beggable.
Lucky the Beggar in Highkeep
The beggar dude in East Freeport as you zone to West (same graphic).
Monala at Erud's Crossing
...must be tons of others, but they'll all get your begging up. Be warned some NPCs at docks will kill you if you have a crit resist (the dwarves at both the Kunark and Freeport boats in Butcherblock will hit hard)
[You must be logged in to view images. Log in or Register.]