King Arts made a couple of 1:1 scale Arc Reactors and I scored myself the Mark III and Mark XLII.
The Mark III Arc Reactor is one of the earlier versions that Tony used in Iron Man.
Both sets come with a holder for better display of the Arc Reactor.
The Mark XLII is a better improved version and enabled more power to be harnessed by the Iron Man Suit.
This will make great conversational starter piece and they work great for illumination purposes.