If you like your cushions on the kitsch and colourful side of things, check out the range from Twentysevenpalms cushions.
The cushions are made from fabric sourced from around the world and certainly won't blend quietly into your sofa. The 'glamour girls' collection features, for example, tropical pin-up girls or saucy '50s-style cowgirls. Their punk/tattoo collection is also worth a look if you're after something a little unusual.
A 45cm square cushion cover will set you back just £12.
You can find them at London's Portobello or Sunday Up-Market, or you can buy them online.