I haven't tried it in the field, but I built a sunshade for my S2 for about $15. I cut a piece of black foam poster board 2 x the width of the S2 and the full width of the poster board. I cut the board 14.5 cm from the edge so that it would fold into 4 sides of a "cube". Velcro is used on the folding panels. I cut a notch to slide onto the tablet support arm and a hole for the USB cable.
I have enough poster board to try three more of similar size.
I have enough poster board to try three more of similar size.
