From AD: How to efficiently & quickly dice onions. There’s no magic trick to it, but just knowing the correct technique has made a big difference.
AD studied hotel management at under graduate level, and knows his stuff.
From SD: How to solve a Rubik cube. He lent me his old unused cube and shared a video with the step by step instructions. I’ve gone from taking over an hour to just under 20 mins.
SD solves his cube in under 3 minutes, with a PB of about 1’30”. He knows his stuff.
From Sis: How to hang woollens in shallow British closets without the arms hanging out and pushing the door open. Invert the arms so they hang inside the sweater/jacket/hoodie. This reduces the width of the garment, helping it fit comfortably in the shallow closets.