This is a very long shot but hey, who knows
We lost a green kids backpack:
www.amazon.com/Deuter-Kids-12-Backpack-Kiwi/dp/B00A1CN0C2?tag=mumsnetforu03-21
It had 2x books, a fidget spinner, pens and a customised t-shirt of sentimental value.
Friday 26 July, 7pm
South Gosforth metro station
I was convinced it would turn up, as the metro terminated there and we assumed it would have been handed in by the driver, but Lost and Found does not have it (yet?). So someone might have taken it 
If you know anything, please PM me - thanks in advance!