I’m a sucker for quality stationery that comes in colourful little packets or boxes, and these Kaweco cartridges fit the bill. Highly pigmented in a small range of useful shades. Perfect for use with your Kaweco fountain pen but are a 38mm standard size and will fit most fountain pens. (note: not Parker/Lamy)

Paradise Blue - This turquoise shade is perfect for summer and is the exact colour of the Mediterranean sea. Makes you want to dive in. Impromptu trip to Greece anyone?

Box size - 6 cartridges