Snowflake Seashell Star
Colouring Adventures in Numberland
Alex Bellos with Edmund Harriss
You get some freedom here, and I think this book is designed for bright colours. Not all of the images are right there for you to colour – you might need to draw lines, or decide on a numbered colour scheme. Others are the traditional different coloured animals fitted into each other which you shade from one side to the other.
If I was to take a guess, if you have a somewhat arty mathematician in your family, this could be a good gift. I’m thinking scientific people of any kind here (just to generalise this 😉 ). Or keep it for yourself. It’s so pretty!