BBC News
By Nell Mackenzie
image captionProducts like this backpack emerged due to Covid and the lockdown
When Dr Fransisco Velasco started work on a Covid ward, he found himself commuting to work with his laptop and notes in a bin bag.
His brand new rucksack was made of canvas and could not be sterilised at the end of each day.
The doctor, based in Mexico, decided to contact the British company behind the bag and tell them about the problem. His girlfriend told him not to bother, as they probably wouldn t care. Undeterred, Dr Velasco wrote a lengthy message.