Most of the keyboard mods i've seen to do this have used electroluminescent wire:<P> Being Seen Tech <BR> CoolCaseMods <P>Here's a TUTORIAL.

Do the same mods to your keyboard by checking out the tools below! (some affiliate links included): 0:00 The 5 keyboards 0:47 Mod #1: tape spacebar mod 1:34 Mod #2: hot glue spacebar mod 2:27 Mod #3: ...