All you need is a red cartolina, a pair of scissors and a black "pentel" pen. When funds are low and there are friendly seatmates nearby, you can always borrow their stuff. After all, it's their idea in the first place. You are just following the trend. Tell them, you will return the supplies later, and maybe, with a wink and a smile, the sweet damsels will be persuaded.Cut a small portion from