F23 my brother is using my plushies

I wasn’t sure where I should post this but I feel like here people maybe wouldn’t judge as much. The short version, my brother is a creep. I buy myself plushies and figurines and I buy home figurines when he wants them. The only problem is he uses these things to…relieve himself on. I got a life size gardevoir plushie recently, it’s a Pokémon for those that don’t know. It kept getting crustier and crustier and one day when hugging it it smelled and was hard, at first I thought it was my drool when sleeping but then I realized some of my plushies had the same thing and I didn’t sleep with those ones. Am I the jerk here? I bought him certain figurines to keep him busy but it doesn’t seem enough.I feel like if I say something to him I’m a bitch, I’m not really good with conflict.