I have been looking for a tool to improve the very loosely sketched up lighting diagram for my Dark Angel shoot and stumbled across the Online Lighting Diagram Creator

Before:

After:

Elements can be added and dragged around easily.  My only gripe is you can’t add your own assets to the diagram.  With a little bit of imagination and improvisation, I used a tungsten light bulb to represent fire!  They do however have a Photoshop temple with all the symbols you need to create your own diagrams in Photoshop

Here’s the tool embedded or you can visit their website