My homemade air-con unit does the trick

Helen Caton suggests a simple and cheap makeshift air con unit. Photograph: Catherine Falls Commercial/Getty Images

For a cheap and simple air-con unit: take the blue blocks used in most cool bags from the freezer; put them in a metal saucepan (we use a wok); place them in the airflow of a fan. Remember to put them back in the freezer in the morning. Sleep tight!
Helen Caton
Woodmancote, Gloucestershire

• Putting external shutters on windows is a good idea (Letters, 27 May), but windows open outwards in the UK and inwards on the continent, which makes shutters possible and efficient.
Claudine Burton
Doddinghurst, Essex

• Having failed to find suitable external shutters in the UK, I installed a tensioned wire above a large hall window and clipped on camouflage netting. Works perfectly.
Jan Williams
Aberangell, Gwynedd

• It was good to have the beneficial uses of screen time thoughtfully analysed (Screentime swaps: how to quit doomscrolling without quitting your phone, 22 May). I would add the benefits of using Wikipedia to check up on the voting records of our politicians and the wonderful science knowledge accessible to children in Octonauts.
Maria Goulding
Gateshead, Tyne and Wear

• Frances Ryan’s preview of Dear England (James Graham’s rousing, joyful football drama will make you cry and shout at the TV, 23 May) refers to “Gareth Southgate missing a penalty in the Euro 96 semi-final”. Southgate did not miss the penalty – it was saved by the goalkeeper.
Bryn Hughes
Wrexham

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