My friend Caroline is doing Double Maths, Physics, Chemistry and Music at AS level - the same subjects that I did. I’ve always wanted to knit this, without really knowing who to give it to, but I think she’ll appreciate it :)

I found the sponge in a cupboard at work. It’s horrible stuff to work with! The little cut-off pieces really stick to your fingers.

Each cube is roughly 4.0-4.5cm along each side.