In my country Ghana in West Africa, funeral rite for the dead is a very important part of our culture and traditions and every family tries as much as they can to bury their dead in the best possible way. My country is a Christian country with about 85% of the population being Christians and the rest being Muslims and traditional worshipers. Muslims like most Muslims around the world bury their dead according to Islamic rules. However, most Christians and Traditional worshipers in my country bury their dead bodies in fantasy coffins and then celebrate the life of the dead person for more than a month after burial.
Most African countries have adopted the western funeral whereby they bury the dead and everybody goes back to work but not in Ghana my country. We do our best to give the dead their final best. In other words, we celebrate their lives and bury them in fantasy coffins. If the person was a fisherman while alive, we may bury him or her in a fish coffin. If the person was an international businessman or a travel agent, we may bury them in a plane or a car coffin. If the person was a musician, we may bury him or her in a mic coffin. If the person was a pepper seller, we may bury her in a pepper coffin. If the person was a powerful King or a powerful ruler, we may bury him or her in a lion or an eagle coffin. If the person was a mother with several children and grandchildren, we may bury her in a broody hen coffin because the broody hen in my culture signifies a good mother. In other words, we bury people in what they loved and did best.
This shiny shoe you see in the picture below is not your regular shoe. It is a Ghanaian coffin for a deceased shoe shine boy and the "Air Canada" behind the shoe is actually a coffin for a deceased international businessman, a travel agent, a pilot, air hostess, or someone who traveled alot by plane.

These fishes you see in the picture below are not regular fishes but coffins for deceased fishermen.

This coca-cola bottle you see below does not contain soda. It is a Ghanaian coffin for a soft drink or a soda seller.

The beautiful leopard art below is not just an artwork. It is a Ghanaian leopard coffin for a powerful king or ruler

In other words, Although fantasy coffins are very expensive, you can get a unique coffin designed just for you in Ghana. Ghanaians bury the dead in what they loved best.
The reason why I am posting this here is that just yesterday a Ghanaian pastor and some others spoke against fantasy coffins. According to the Pastors, fantasy coffins go against Christian norms and that they are not going to allow their members to be buried in fantasy coffins. Most other Christians have spoken against fantasy coffins in the past. What some Christians do these days is that, they put the dead bodies in regular coffins when they are taking the bodies to church for the requiem mass but after church service, they put the dead bodies back into fantasy coffins and then bury them.
My question is, Is it a sin to bury someone in a fantasy coffin? Is it against Christianity to use fantasy coffins to bury the dead?