We travelled to Cuba last month, and took a very BASIC watercolour kit with us. It was a homemade travel kit, consisting of 4 colours (yellow, red, blue and brown). We had leftover watercolour tubes of various colour at our house, so we squeezed each colour into a water bottle cover, and let those dry, then taped the caps into a plastic case with cover. That was it, except for cheap dollar store brushes, and a couple of old film canisters as water containers. We painted outdoors "Plein Air" on watercolour sketch books.
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