UK specific comment possibly but: try a local art materials shop. Most will have A5 hard-backed sketchbooks with around 90 to 100 g/m^2 paper in with either whi

UK specific comment possibly but: try a local art materials shop. Most will have A5 hard-backed sketchbooks with around 90 to 100 g/m^2 paper in with either white or ivory finish/colour for less than a fiver. Pretty ink proof and a lot cheaper than the branded ones. I like pencil and Muji pens, the ones that are about £5 for a 6 pack.