You know how much space a bunched up plastic bag (or even a folded up bag) can take up. By folding the bag into a neat little samoosa, you can save a lot of space for all the other essentials in your bag!
So, here is the shopping bag ...
Fold it in half length wise ...
and fold it again ...
Now comes the tum part, lol. Fold a small triangle in the base of the bag. Smooth the line with your fingers.
And fold the little triangle again ...
carry on folding the bag into the triangle shape, keeping the folds tight.
Some more folding, lol.
Some more folding, lol.
and the second last fold.
Here I fold a little angle on the last bit, so that the plastic can fold in smoothly into the slit.