My boyfriend was playing a game called Cities Skylines that looked interesting and he said calmed him down. I had a go and it was great, you build your own city and sort things like electricity and water, schools, police, transport, taxi, zoning etc. A bit like sim city. And I ended up playing for hours, it was a great distraction.
It's expensive to buy I think but Dave said he got it cheaper on Steam. Or maybe find a similar game to play that is absorbing?