This NPC is based on the child template here [1]. Before adjustments, its ability scores are Str 8, Dex 11, Con 9, Int 13, Wis 12, Cha 10.
Gnomish Child CR 1/8
Male or Female Child Gnome Commoner 1/2
TN Tiny Humanoid (Gnome)
Init +0, Senses Listen +2; Spot +0; low-light vision
Languages Common, Gnome, Dwarven, (burrowing animal)
AC 12, touch 12, flat-footed 12
hp 1 (1d2-1 HD)
Fort -1, Ref +0, Will +0
+4 AC vs. Giants, +2 vs. illusions
Spd 10 ft.
Melee -3 unarmed (-2 vs kobolds and goblinoids) (1 nonlethal, provokes attacks of opportunity)
Base Atk +0; Grp -13
Space 2.5 ft.; Reach 0 ft.
Spell-like Abilities (CL 10): 1/day — speak with animals (1 min.)
Abilities Str 1 (-5), Dex 10 (+0), Con 8 (-1), Int 12 (+1), Wis 11 (+0), Cha 9 (-1)
Feats Nimble Fingers
Skills Craft (engineering) +5, disable device +4, hide +8, listen +2, open lock +4
Possessions Couple of crafting tools (count as improvised equipment for craft (engineering) checks), tiny clothes, 1d6 cp
Notes[]
This child is destined to become the stereotypical gnomish tinkerer and have the skills, feats and equipment to match. Gnome children training towards different professions are likely to have different statistics, but they probably won't make a significant difference anyway.