Dinosaur Fossil for Charity
It may look like an ordinary rock, but this rock is actually the fossilized cast of a dinosaur brain and the closest you can get to a real dinosaur brain without buying an island and making your own Jurassic Park. The rare fossil, discovered in Sussex, is 135 million years old and shows "finely preserved impressions of nerves blood vessels and other soft tissue" from the brain of an Iguanodon. The auction entry suggests that it would make a great piece for a museum looking to expand their collection, though it would certainly be a conversation starter for a private home. The bidding starts at £50,000 and 60% of the final sale price will support Children's Brain Tumour Research Center.