Two colours spiral round each other in this quick and easy-to-make toilet roll cover.

It uses less than 45 metres (50 yards) in each of the two colours.

The ebook contains patterns for eleven knit and crochet toilet roll covers based on mathematical concepts. It also has a section that will help you to design your own covers.

The patterns are not available individually but, if you want just one, I can supply it in return for a small donation to my favourite charity.