What playground should i buy?

I started to let my cockatiel outside almost 24/7 so he can go wherever he wants, whenever he wants but i feel like its a bit boring for him outside because i dont have many toys and i have a lot of empty space, he's not tamed and wont interact with me yet but he's willing to be near me and is not too scared of me, he's also willing to eat millet from my hand, so, ive been thinking if buying a playground for him is a good idea and if it is, any recommendations? (maybe some toy recommendations too)