Dalek loo roll
From Tardis Wiki, the free Doctor Who reference
Dalek loo rolls, along with Dalek slippers and soaps, were some of the Who merchandise that the Tremas Master travelled back to 1964 to purchase at pre-inflation prices to sell at a later date. According to the Sixth Doctor, this transgression of the First Law of Time resulted in the Master's banishment from Gallifrey. (NOTVALID: Doctor Who? 107)