For this 1 Minute Finger Tip you'll need two pieces of kitchen roll, bicarbonate of soda, two empty 35mm film canisters, paper and a pen, stick glue and some clear vinegar. Ready? Then start the clock! Begin by placing a heaped tablespoon of bicarbonate of soda in the centre of each piece of kitchen roll. Fold each piece of kitchen roll into a neat parcel, taking care not to spill the bicarbonate of soda. Use a pen to write "Yes" and "No" onto small pieces of paper. Stick these to the sides of the film canisters by dabbing on some stick glue. Fill each of the film canisters half way up, with clear vinegar. And stop the clock! You've made the Finger Tips 1 Minute Decision Maker which will help you make up your mind on any subject, whenever you like. But you must do it outside, be quick and specific and only ask questions to which there are yes and no answers! Simply think of something you'd like an answer to. Pop the kitchen roll parcels into the film canisters, and stand back! The first lid to pop off is the decision to go with!