Creative sell a charger for their mp3 players at around £13-20, dependant on where you buy this.
this charger is £4.75 delivered to mainland UK
it works well.
standard UK 3 pin plug, white.
has long wire.
on the end is USB, so might work with other USB devices, not sure haven't tested.
BUT DEFINITELY WORKS WITH CREATIVE ZEN (mine was 16gb)
when it is charging a large green light comes on that is quite mesmerizing, i stared at it for a good 30-45 seconds.
came in a jiffy bag, lined with bubble wrap.
inside was a square box and inside that was the charger.
the package is small enough to fit through a letterbox.
all in all, well worth the money.