We all know that having a sit down can be a time consuming and boring process. Some people read, others sing. Why not play Sudoku with your loo paper Sudoku Toilet Roll is dangerously addictive, and if you get frustrated with it and cannot complete it, just use it as toilet paper and flush it away. Sudoku is easy to play, just complete the grid so each row, each column and each 3 by 3 box contains the numbers 1 to 9. Great toilet fun and a perfect present for the true sudoku fan!