Making or finding toys for my frog(whites tree frog)or for any type of frog

[Whitestree frog]

understanding that if frogs touch chemicals they can absorb them and if the chemicals or plastics are exposed to water the chemicals can come into the water or out of the plastic, I would like to create or find toys fro my frogs. I was thinking of making them maybe out of Legos but I need clarification on whether that is safe or not. I also wonder if there are pre-made toys like Hess trucks that would be safe for a frog, a whites tree frog more specifically, to play on or ride on because mine likes to be out of his cage. Please help me with this situation i want to make him as happy as possible. Thanks!

[alane]

your tree frog likes to play on toy trucks?!?

[Whitestree frog]

I dont know but I'm asking what would be safe for him since he likes to be out of his cage