Try to avoid plastic toys, budgie beaks are strong enough to break/tear off pieces and they can be swallowed. Rattan balls are much safer, my flock loves them, plus you can put treats inside them as puzzles/foraging toys which is really good for their overall wellbeing.

​

https://www.amazon.com/Benvo-Parakeet-Decorative-Accessories-Multi-Colored/dp/B08JHLP5DQ