Well I tend to be a little traditional myself and see it as the blood harvest. So I tend to have a lot meat dishes etc for a sort of group meal. But to mark the day in a family sense and have a lot of fun, pull out all the old traditional games. Bobbing for apples and things like that, do the place up with a little halloween theme but slip in a few things that are specail to you.
You can even get the family (if they are willing) to help you make a specail place for a candle. Decorate it with whatever you want and say that its to honour those who are no longer here with us. Just a few basic ideas, but like I said, the games aspect, gods you can go on forever with that one lol
Come to think of it..............I need to start planning one myself

I'm a Pagan, I am the ever changing wind, the shifting sands, the turning of the wheel, I am nature