You don't mention a budget, but there's a few here to choose from. Can recommend hificables.co.uk as well - have ordered a 6 or 7 times from them and always received the item next day.
Ditto HERE Fisual at a fiver, through Profigold at slightly more up to QED. I used to use an Ixos 3.5mm to phono cable that cost me £13 or so that was good enough for my iRiver to stereo amp.