o use a green rubber ball with holes and stuff with popcorn, or millit, or shredded paoer and stuff. I get dollar store stuff to use, I git this mini plastic two drawer storage thing and out treats and stuff inside, and tge parrots pull out the drawes.

Burd trick videos on YouTube has a foraging segment. She uses parts of old toys to make up forage stuff, or stuffs millit into toys.

I wouldn't use kitty litter.

The 3 toy in your pics, the ball, I had that. But the tiny magnets kept falling out, very dangerous if the bird injests. So I threw it out.

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