I am new to Thunkable X, so I converted one of my App Inventor apps into Thunkable, and here I present my results.
This app is just an app to generate random cute animal images, which cover dogs, cats and foxes. I use three APIs to get a random image from the web, and then show it in an image. The user can choose whether the result can be dogs, cats or foxes (they can choose more than one option). If they chose dogs and cats, the app will either generate a dog or a cat, but it will never generate a fox in this instance.
View my project here.