Grab a piece of paper and draw 30 circles, set a timer, and aim to turn the circles into different objects: as many as you can in five minutes. They don't have to be great ideas, we're focusing on ...

non-functional objects,” says a museum statement. Another artefact, an engraved drawing of a horse on bone, is 13,500 years old. “This is the oldest known work of figurative art from England ...