If you know where they want to be buried when they pass on, I would start there. Now Funeral homes are a business just like anything else, so they will probably try to sell you a package of somesort... which is easier to think rationally about why they are still here. My mother knew what she wanted, and where she wanted to be buried - so I just followed her wishes. She even wrote her own obituary, if you can beleive that.. lol
I know it can be hard to try and think of these things now, but its twice as hard to think about it after they are gone.
Great works are performed, not by strength, but by perseverance.