Captin Kirk, I lost my Mum last year and because I know she didn't want a religious funeral (and neither did I) I organised and led her funeral with all her favourite music and anecdotes about her life. It was actually very 'spiritual'. Some people might well have been offended, but what was important was my Mum and her close family and I knew she would have loved it. Naomi is right.
(Actually the elderly aunt who I worried about offending most of all said it was the most lovely and moving funeral she had ever been too - and she is a very religious, church going person)
xx