A French company called Lumigram sell tablecloths, clothing, decoration and fashion accessories that use fiber optics for illuminating.
The products are all equipped with plastic optical fibers that are woven with the standard threads. The fiber optics are powered by batteries and are even hand-washable. Cost looks to be a bit steep, but definitely a very cool concept. Here are some photos:
You can find all of Lumigram's products at their online catalog.