With the credit crisis still dominating the headlines, the nations' entrepreneurs are finding it hard to attract the financial backing they need. However the Den is still very much open for business but only for the very best ideas.Attempting to prove they've got the recipe for success this week are chef Niall Harbison and his partner Sean Fee, who think their foodies website will prove a tasty proposition to the Dragons. Also, will the multi-millionaires see the magic in Neil and Laura Westwood's Magic Whiteboard - a statically charged plastic sheet which they think will eradicate the traditional flipchart?Other ideas in the den include Turkish-born entrepreneur Bilfer Ecin's high visibility Car Safety Vest, designed to wrap around the back of a broken down car to prevent accidents. Andrew Cunningham pitches his colourfully decorated builder's hard-hats and the Dragons get a master class in salon skills from Frank Bisson, who has so far sunk 800,000 pounds into his innovative glass bladed gadget for eliminating split ends and speeding up the haircutting process. Will they be serenaded into investing in Yann Seznec's original music game for the Nintendo Wii? What will they think of the Hedgehog Golf Company's promise an end to furrowed-fairways everywhere with their wheel spikes for golf trolleys.? And finally, why does successful houseware inventor Guy Unwin, inventor of the 10 million-selling toastabags need the Dragons' money?