I normally use a cat can meths stove, and a household aluminium foil windscreen which works well and is seriously light.
But on a recent 12 day trip, I went with an upright cannister stove in the interests of fuel efficiency. Unfortunately the aluminium foil was too flimsy for the extra height.
A MYOG windscreen should be an easy project, but to save me the error part of 'trial and error', what have people used for materials for windscreens, where did you source it, and how do you store it safely in your pack without getting crumpled/torn.
Mad
PS. Bonus points if you can supply instructions for the craft-challenged.