I like the idea of a machine you plonk on the wall that then grabs the most expensive item around and throws / brings it to you.
Cable cars would be awesome! It would be so cool to build one across a huge valley and travel right over it, especially if it could zoom out while you were in the cable car. Not sure it would be practical as it would probably just be quicker to do it on foot seeing as you run so fast, and it might be hard to code. Would be cool though.