I'm glad you enjoyed the game!
We implemented a resistance/weakness system so that certain toy spells were better for certain cat attacks. However, balancing the system as well as providing feedback to players in the given time frame of a game jam was a bit of a nightmare xD But yes, some toys (the first 2-3) are more favorable to use than others. (I personally like using the illusory kitten because the idea of throwing a smaller cat to tire out the bigger cat amused me lol).
And yes, while licks and furballs aren't too bad for us humans, they're very menacing to our teeny mouse sorcerer. ^^''