Ian's cheap safe light:

Red 25 watt party light bulb from local grocery store: couple bucks
Cardboard and tape to wrap around it to make make it nice and dim
bulb to plug adapter from home depot so I could plug it directly into my timer: .99

I wouldn't call it ideal but it sure worked good while I was waiting for a safelight I bought online to show up (got lost, had to file a claim, blah, blah, blah)

Another cheap tip... I use 3.5 liter round tupper ware containers for developing. Holds 6 - 4x5 film hangers with the greatest of ease and when I'm done I just slip the tops on again.. Only a couple bucks each at Zellers