Making the Right choice

Like many my age I don't want to leave this world and expect someone else to pay for the funeral, so it's all sorted, well all except the Coffin. Trouble is who can you ask for advice? They have all moved on, so do I go for a fitting? And how does one decide the specification, lined or plain, wood, cardboard or woven basket. What if any personal effects do I take with me, Muffin the Mule, Dan dare space station, Hotel California, choices so many to make.
Any ideas?