Inventing new Harry Potter props?

It seems like everything from Harry Potter (prop wise) has been done, attempted or is still in progress. I was wondering, for all you creative thinkers out there, if you can think of a prop invention that would be a good tool in the Harry Potter series. Maybe something J.K. Rowling didn't think of that would be cool in the wizarding world. Any ideas?

 

There were some really cool concept art pieces done of some of the "dark arts detectors" for Half Blood Prince. Really cool looking ideas:

HereAnd Here

Definitely worth a look, as well as some of the ideas for the toys and gadgets in Fred and George's shop.

Could be really cool to see some other pieces in the same vein as these.

i

 

delete