StarTech.com 3 Port PCI Express 12V PoweredUSB Adapter Card - USB PlusPower
LINDY 2 Port Power over eSATA Card with USB Function PCI Express
Adapter World PCI-e 1X to 16x Riser Card 20cm - Usefull for bitcoin mining!
inc P&P: £18.80
Super9shop 2 pcs PCI-e express 1X to 1/16x Riser Extender Card with molex power + ribbon Cable 25cm
inc P&P: £27.99