The following idea and pic was copied from a post in the Isaiah 9 lesson forum. The idea can be used for "light of the world" as well.
Isaiah 9 "Great Light" light switch plate
Isaiah 9:2 "The people who have walked in darkness have seen a great light..."
Plastic plate switches are really inexpensive and decorating them can make a great semi-permanent home reminder. Draw with permanent markers (instead of paint) or paint pens (if you have time and a blow dryer to hasten dry time), --leaving white areas of the plate on which to paint glow in dark paint (which illuminates brighter when it is placed on a white background). Write all of the phrase from the verse with pen, but apply some glow in the dark around it.
The following image inspired the Isaiah 9 idea above. Nice project but in the photo, the blue must have been painted on ahead of time. Glow in the dark stars are easy to find.