Maybe a .380. Nothing great, just something for plinking, varmits, and the like. Not particular about brand/model as long as it goes bang. Not looking to spend more than $200.
A bit too expensive to go plinking or varmiting with a .380acp. Maybe should look for a .22lr/.22wmr. $200 may not get you much unless it's a belly gun or inexpensive .22 single action revolver or even a semi auto for just s little bit more. If you want a bigger caliber, you might want to stick with 9mm but you'll hard pressed to find one under $200. If you have to have .380, look for a used Bersa Thunder. You may be able to find one used for around 200-250. The Bersa usually sells new for around 279-299.