Dagger

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) piercing damage.

Light Crossbow

Ranged Weapon Attack: +5 to hit, range 80/320 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) poison damage, or one-half poison damage with a successful DC 13 Constitution saving throw.

Shredder (Recharge 6)

The kobold trapsmith primes and throws a device at a point within 30 feet. The device explodes when it hits something solid, flinging razor-sharp spikes in a 15-foot-radius sphere. Every creature in the area takes 14 (4d6) piercing damage, or half damage with a successful DC 13 Dexterity saving throw. The ground inside the spherical area is littered with spikes; it becomes difficult terrain, and a creature that falls prone in the area takes 7 (2d6) piercing damage.

Stunner (1/Day)

Ranged Weapon Attack: +5 to hit, range 20/60 ft., one target. Hit: 5 (1d4 + 3) bludgeoning damage, and the target is restrained (escape DC 13). While restrained, the target takes 7 (2d6) lightning damage at the start of its turn and falls prone. The trapsmith has advantage on the attack roll if the target is wearing metal armor. A stunner is a bola made of metal wire, magnets, and static electricity capacitors. A kobold trapsmith can recharge it during a long rest.