A gadget for Christmas

[Beggarall]

I am tasked to buy a Christmas present as a Secret Santa. I am looking for a gadget/gizmo for a technically aware 25 yo male costing around £30 or so - something unusual, interesting and hopefully something he hasn't already got - he has all the usual phones/pads/raspberry pi's etc. I know there are lots of similar aged lads among you - what would you like? Help needed please. Thank you!

[Crusoe]

Stirling engine http://www.ebay.co.uk/itm/like/370890904054?adgrou...

solar radiometer http://www.ebay.co.uk/itm/Radiometer-Solar-Crookes...

[Ali Chappussy]

Dash cam?

[Tinkshusband]

a hubsan quadrocopter or a decent set of headphones - seriously you can never have enough good headphones.

[mcbook]

Chromecast Audio - lets you turn an old hifi into a Sonos-a-like system. Bang on the money at £30.

http://www.google.com/intl/en_uk/chromecast/audio/...

[CorbynForTheBin]

Crusoe said:

Stirling engine http://www.ebay.co.uk/itm/like/370890904054?adgrou...

solar radiometer http://www.ebay.co.uk/itm/Radiometer-Solar-Crookes...

[soad]

http://www.red5.co.uk/gift-finder/recipient/gifts-...

[Foliage]

http://www.ebuyer.com/625681-hubsan-nano-q4-quadco...