I think the most important and simple thing to do on Samhain is to remember your beloved dead. Set up a simple altar to those among your family, friends, and personal heroes who have passed on. This is just photographs, mementos, etc. laid out attractively and with a candle and perhaps a small bouquet.
Have two goblets. Pour a glass of wine to the Beloved Dead and a glass for yourself.
Raise the glass in salute. Tell each of your dead why you honor them and what you remember and love about them. Drink.
The next morning, pour the wine for the dead onto the Earth.