Audiojerry,
I didn't want to let the cat out of the bag but perhaps I better...Those "two cute little balls" are patterned after the famous Mapingo Dots. They are tuning devices and they're called Midinky Nutz. As per Chuck Josephson, I have hundreds of thousands of these hanging from my ceiling, from my cables, inside my speakers, glued to my tweeters, inside my custom made 300b tubes, all over the floor, on my mail box across the street, on my mains box, on the transformer and transformer pole behind my home, my wife wears them anytime she comes into the listening room....anywhere where I think they will do something. I also make sure they face North. The only problem this causes is when my wife walks into the listening room, she has to walk in backwards...might not be an issue with other people's rooms. I just tend to be a little obsessive.
I tried to take a picture to post but the reflection from the flash off of all the little balls just made the picture a huge blinding light blur....more eerie than illustrative. The two you have are a good place to start. Hang them anywhere where they do something. The effects are cumulative. The more you use, the more remarkable it all becomes! The effect is really something as you may already know. It's okay if your cat swallows them. They even do something to animals. Especially when they're in the listening room during music. When the cat uses the litter box, just load the kitty up again! As a matter of fact, even with animals, the more you give them, the effect is cumulative and the more something will happen! BTW, after Halloween, you should be able to buy a ton of these real cheap. ENJOY!