If your muse only comes to you in the dead of the night, this illuminated keyboard should help to ensure that you get everything written down. The see-through plastic keyboard from Night Owl is of the ergonomic, split-key variety that takes forever to get used to (but is apparently very comfy once you have).

It's also splash proof, so if you're up late drinking coffee and eating biscuits in an effort to meet that deadline, you won't need to worry about the odd spillage or spittage.