Playtesting: Track different types of counters per card

I would love to be able to track multiple types of counters on each card. While playtesting, I often use the counter feature to track how many e.g. Squirrel tokens I have (or else the board becomes unbelievably cluttered). But if I start adding +1/+1 counters to my Squirrels, I’m not able to track both. The same is true for tracking charge counters & +1/+1 counters on e.g. a card with the Station keyword ability. I think it’d be nice to be able to have multiple “tracks” going simultaneously. Thanks!