Love Teenage Engineering, though I've never been able to justify buying something from them (especially not this!). Though I am looking forward to the Playdate [0], which they designed.
Since it's called 'playdate' and since it looks kinda retro -- a cable to play head-to-head games like the original Nintendo GameBoy did would be pretty cool.
Can thoroughly recommend if you're in any way inclined. Their other pocket operators are more synthy, but I'm a hip hop head so naturally gravitated towards the sampler.