Have a ball! Specifically, you can have a ball that represents a sub-atomic particle. More specifically, a Muon. Why is it so sleepy? I don't know, I'm the manufacturer, not the designer. That would be my 10 year old goober child. We're splitting the profits from selling these, so if you'd like to support a creative kid, go pick one up.
https://www.etsy.com/shop/sparkcreatures (I have some other stuff up there too, feel free to browse around. The particles will be under the "handmade plush" category, you should be able to select that on the left sidebar.)