What are the best gadgets to have in a man-cave?

My boyfriend loves gadgets and the idea of having a smart home. We've moved into a new flat with space for a man-cave type set-up. We've put a LG tv in there and it would be great to add some tech he could play with too. It's his birthday coming up and I'd like to get him something he would... show more My boyfriend loves gadgets and the idea of having a smart home. We've moved into a new flat with space for a man-cave type set-up. We've put a LG tv in there and it would be great to add some tech he could play with too.

It's his birthday coming up and I'd like to get him something he would actually appreciate for this room.

There seems to be a lot of choice so recommendations would be really helpful.
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