For those of you that have done DT and got your ghostly robes, you can get a free 10k XP lamp.
You must have gone all the way to the last ghost and finished his dialogue.
Then go to Varrock Museum and speak to Historian Minas, just up the first set of stairs.
Say "I have some s**t that you can use in your displays"
Talk to him for a while and you'll get a 10k XP lamp, and probably a few 1k XP lamps.
You can use the 10k lamp on any skill over 50, and the 1k on any skill over 30.
Just thought I'd share this because not many people know about it.