Hard wearing & Light weight - panels

[AK]

looking for some suggestions to line the rear garage in the camper van... Its lined in 5.5mm ply just now, but looking to 'finish' it with something a bit more gucci looking.

Thoughts are

1 - Alu chequer plate
2 - aqua panel

Both would seem a bit heavy for my liking

Anyone got comments of acrylic or FRP panels? Even HDPE panels like youd use for motorsport door cards?
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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
500 - 1969 Fiat 500 L
X5 40d M Sport
Mini Cooper Park Lane
MB Sprinter Camper
Track Scotland

[AK]

https://www.thevanliners.co.uk/van-lining/index.html
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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
500 - 1969 Fiat 500 L
X5 40d M Sport
Mini Cooper Park Lane
MB Sprinter Camper
Track Scotland