Being of a thrifty nature, I found some pink polka dot paper from a roll of gift wrap which was in my cupboard, and two vintage advertising postcards from my stash.
Wandering through the town half an hour later I walked into Primark and saw these lovely floral hand towels and face cloths. The background was pink polka dots - perfect!
So, for less than a fiver and ten minutes work, my guest bathroom has a fresh, new look! Isn't it funny how things just come together out of the blue (or pink, in this case)?!