What should be my object for an imagery poem for english?

im having to do an imagery poem for english( p.s. im a 7th grader) and i need a poem. i might perform it in our poetry slam. if you have any object ideas i could do it on or just a plane imagery poem for me would be super awesome. all my friends can write excellent poems but i cant. i just want to impress them. and the whole school. but still, i need a poem. :D