Sickle

This weapon is like a farmer’s sickle, but it is strengthened for use as a weapon. It is favored by druids and by anyone who wants a weapon that might be overlooked by guards.
Because of a sickle’s shape, you can also use it to make trip attacks. If you are tripped during your own trip attempt, you can drop the sickle to avoid being tripped.

Simple, Light Weapon
Cost: 6gp, Weight: 2lb
Dmg (S): 1d4, Dmg (M): 1d6, Dmg (L): 1d8, Critical: x2, Slashing
Source: Player's Handbook