This NPC is based on the child template here [1]. Before adjustments, its ability scores are Str 9, Dex 13, Con 8, Int 11, Wis 10, Cha 12.
Halfling Child CR 1/8
Male or Female Child Halfling Commoner 1/2
TN Tiny Humanoid (Halfling)
Init +1, Senses Listen -1; Spot -1
Languages Common, Halfling
AC 13, touch 13, flat-footed 13 (+1 Dex, +2 Size)
hp 1 (?1d2-3 HD)
Fort -2, Ref +2, Will +0
+2 vs. fear
Spd 10 ft.
Melee Unarmed -2 (1 nonlethal, provokes attacks of opportunity)
Ranged Sling +3 (1)
Base Atk +0; Grp -12
Space 2.5 ft.; Reach 0 ft.
Combat Gear sling, 1d6-1 stones
Abilities Str 2 (-4), Dex 12 (+1), Con 5 (-3), Int 10 (+0), Wis 9 (-1), Cha 11 (+0)
Feats Deft hands
Skills Climb -2, hide +9, jump -14, move silently +3, listen +1, profession (cardplaying) +3, sleight of hand +5
Possessions Combat gear, plus deck of cards, children's clothes, 1d6 cp
Notes[]
This child is destined to become the stereotypical halfling grifter. Because it is so ingrained in their culture, even children carry slings; usually these are used in games with other children, but they can be used as weapons in a pinch. Halfling children destined for other professions are likely to have different attributes, skills and feats, but such details are unlikely to come into play, so this stat block is probably appropriate for any halfling child.