I am a fan of Eugene B and think a spooky presentation does a lot to enhance the performance (as long as you leave no doubt in the audiences mind that you are not he next messiah DB take note)
http://www.blackhart.pwp.blueyonder.co.uk/index.html
They have a great section entitled Black Artefacts which has some great props if you are of the Simon Drake , Eugene B persuausion plus you can see Black Hart himself on the website.
It prompted me to make a haunted deck from an old pack of Tarot cards I had lying around, it adds to the effect immeasurably
See if it gives you any ideas

(Its also situated in Birmingham on Mandrakes doorstep geographically speaking
