I was about to agree with you Pete about Batman TDK but then I started thinking about it.

Joker can was the obvious one but then I thought well do you think the same about the ship in the new Star Trek, spaceship in AFM, mummy and bride on MB, homer on TSPP.......you may see where I am going here.

These toys move but have no ball interaction, but they are interactive and tell you have done/achieved something. To me then, not useless.

Drawbridge does have ball interaction but never changes the outcome but neither does the Gumball on TZ and that is considered one of the best toys/features in a game!

Each to their own obviously but for me useless has to mean no ball interaction and no meaning/interaction.

And yes......

I clearly have too much time on my hands.