OK. I am very bad at coming up with gift ideas and now I left it a bit late.
I have to buy for:
Married couple in 40s without kids - living in the UK.
Married couple on 40s
All adults are quite nerdy maths/engineer/IT types so wondering about ideas along that topic. Alternatively, maybe a present relating to Switzerland?
Cannot be food items and must be small items that can fit into hand luggage.
Ideas?
An Amazon.co.ukgift card.
Make sure you get the UK one, others from US/DE/FR can’t be used there.
alternatively some gift credits for some cloud AI or cloud in general, speaking about IT nerds
Too bad the ‘anno domini’ (version: Erfindungen) is only in German…otherwise, highly recommendable! (and, btw, no chance people play it in 30 minutes…)
now, if you want it to be real swiss, can be related to chocolate, cheese, mountains, or trains… what about this? Switzerland | Dovetail Games Forums
that is as nerdy as it gets… 
but, nice nerdy I mean
The 2nd couple are German, so the game might work.
I gave a nerdy friend a Galton Board as a gift and he was overjoyed with it.
It’s basically a device that demonstrates how randomly falling ball bearings distribute themselves into a bell-shaped curve, illustrating the central limit theorem in action.
I hope you included some instructions:
I was trying to follow what’s the meaning of the honeycomb number pads and why the balls doesn’t just fall straight down… but anyway cool things to watch for a few hours 
When I turned 40 I wanted to celebrate the mid-life, allowing myself for any fancy-stupid-throw-away gift I’d like to get, ended up buying a wholly bunch of magnetic balls sets 
LoL I read the article for ‘historical curiosity’. How woke! don’t worry, as scientists, we have also skewed bell curves, and other oddities, to fit the “un-fittable”.
It reminded me my first year in US as assistant professor. In the first exam of the matter, all of the students failed the exam. The chair of the department called me and asked what happened. I told him ‘at their level (2nd year University), I would expect that they have a grip on the basic concepts, and none of them could answer basic questions, and (or) all of them made essential errors on their analyses’. His answer was lapidary: ’ do you know what a gauss bell is?.." I said, of course! and he said " apply".
He asked me basically to pass 50% of them, even if their level was at what I considered a high school student in Europe.
I refused.
The rest is history… 
Oops. I ordered the game from Galaxus and wondered why it hadn’t arrived yet and realised the delivery date was after my plane is supposed to leave so had to cancel the order.
Amazon to the rescue, they can deliver it faster.
No not just woke, but also totally scientific. The tyranny of the bell-curve is an old idea. My search just threw up that article on exams by chance. The bell -curve and use of statistics obviously have their uses and need to be taught. In Science, within the 95% certainty limits is the gold-standard, but that limit is totally arbitrary.
Interpretation of a particular bell-curve is important. What is being measured? How reliable or relevant is that measurement? How do we interpret a particular position on a bell-curve for an individual?
In another context I found this article interesting
Must admit, the present looks pretty cool.
i have one if you need it in zurich
Thanks, but I ordered from Amazon now and they can ship it in time!
I found another excellent present for nerds… (I thought it was only for children, but he makes also nerdy toys for adults. Here it is: