Well you just need a MicroUSB plug at one end and a normal USB in the other end, and since the MicroUSB is almost standard it should not be hard to find one
i have a lot of them laying around, no-name, SE & Nokia + samsung chargers (Micro-USB) and they all work, even the crappy ones, only ones that don't work are the REALLY crappy ones from DX, they have so thin wire that they struggle to transfer 500mA in only 30CM