Mrs discobay has a 3-door Honda Civic and I have been tasked to look into what I can add to the side and rear windows to cut down on the glare and heat coming in. What can I get and from where?

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MY10 WRX hatch, Commodore VE SS, Audi Quattro, Toyota MR2, Peugeot 205 GTi, Mk2 Cortina 1600E, Triumph Dolomite Sprint