Looking for a player/target randomizer system, anyone who has experience with anything like that?

Hi, I’m currently working on a boardgame were there’s going to be a lot of random elements. Most of them works fine with different kind of dice but I can’t figure out how the monsters that the players are fighting will choose their targets. I want it to be random and not pre decided by some game rule. The game will be 2-4 players so the number of outcomes for the randomizer will shift. I thought about those spinning arrows but I feel like they quite fast end up in a bad condition. The best thing I came up with was something like one of those bingo wheels where you add a ball or something that represent each player. But I feel like those are big and bulk. So, does anyone have experience with something like what I’m looking for, or any idea for a solution?