With the economy in such trouble and people struggling to make ends meet, it might be time to consider adopting the suggestions in this 2:45 British film from the Ministry of Supply. “How to Make Do and Mend” presents an exhibition arranged by the Board of Trade in Harrods Store in London in 1943 to demonstrate “substitution and conversion” economies. There’s a fashion show with models wearing patchwork and reworked clothing. Less elegant but no less practical is an improvised cot for a baby: a sack stretched between two chairs!