Doctor Who Series 10: 11 Easter Eggs & References In 'Oxygen'
4. Sonic Screwdriver Destroyed
The Doctor's trusty sonic screwdriver gets destroyed this episode. Shock horror! That's never happened before!
In case our sarcasm isn't coming across, the sonic has indeed been ruined several times prior to this. On the first occasion, in 1982's The Visitation, the Doctor was unable to replace it and went "hands-free" in his adventures until - here it is again - Doctor Who: The Movie. In the modern series, the loss of the sonic has proven to be much less of a problem as the gadget has kicked the bucket in Smith and Jones, The Eleventh Hour and A Christmas Carol and has been easily replaced each time.
It's worth mentioning that the sunglasses that the Doctor dons here are presumably his sonic shades, which he used in place of the screwdriver model throughout season nine.