Contrast occurs when there is a difference in luminance or colour that makes an object distinguishable. It is determined by the colour and brightness of the objects within the same field of view.  

Contrast also occurs when the state of something is strikingly different from something else in juxtaposition or close association.

This can be a really fun photo challenge!  You can use contrasting colour or contrasting items, or contrasting texture or all three!  

I found an old spoon on the beach.  It is strikingly different yet somewhat the same as a spoon from my cutlery drawer. I photographed the spoons on a black board to show off the contrast in colour and texture.

Can you find similar yet contrasting items?  If not, photograph a sensational item in a contrasting manner.