IT’S A MUDDLER! Seriously, this is the best muddler you can buy (make). Get this french rolling pin, cut off one of the tapered ends and sand the sharp edges. Now you have an 11-inch or so muddler with small and large ends that will last the rest of your life!
Note: Specific versions of the French style wooden rolling pin come and go. If there is an option to pick a 15, 17, or sometimes even 20 inch version, pick the longer one, as it will afford the greatest flexibility when you are cutting it.