Ryanair now permits one free tiny 40 x 30 x 20cm bag that must fit under the seat while easyJet allows a marginally larger 45 x 36 x 20cm bag as hand luggage. The solution could be ‘Sudoku Packing’. When laid out together in a 3x3 garment grid, the Sudoku selection should create the perfect holdall-sized capsule of holiday clothes. Once laid out in a 3x3 grid, exactly like a Sudoku puzzle, the clothes should generate up to 27 different ‘top-bottom-layer’ potential ensembles. VerdictChoosing clothes more thoughtfully resulted in more wearable outfits than I usually take when travelling, even when packing twice as much.