Bows and ribbons of all kinds are going to be big this Spring, as is monochrome, so you get the best of both with these fab bags from Mango. The black one is PVC (therefore you're on trend for the patent look too) and the white one is cotton and linen. They cost £30 each and would make great cosmetics cases once they're out of vogue.
Purple and pink bow bag from The Jewellery Stall | Gladrags blue bow bag | Strawberry print clutch bag from Dune