Tom Sachs: Swiss Passport Office

If you enjoyed playing 'shopkeepers' or 'post offices' as a kid, then you might like Swiss Passport Office by Tom Sachs. The installation allows visitors to leave with their own Swiss passport, complete with photographic ID and serial number. It'll cost you €20 (pounds are strictly not accepted, so you'll need to play 'bureau de change' before arriving), but you'll leave an honorary member of a nation famed for clocks, chocolate and Roger Federer. It's all to make you reflect on Brexit, the migrant crisis and other modern horror stories.