I'm not sure what this has to do with Of Mice and Men except that, I'm guessing, you are reading this book currently. It sounds like your teacher has given you an assignment that gets you thinking about imagery, which is descriptive words which appeal to the five senses. Probably you are confused because the assignment is a little more simple than you are thinking. It sounds like he/she simply wants you to describe something and talk about the way it looks, sounds, tastes, feels, and smells.
If I were you, I'd choose something that you love or hate so much that you can describe it vividly. My first thought is towels fresh out of the dryer.
Here's an example (but don't steal this - write your own!): I love towels fresh out of the dryer. I love piling them on top of me and letting them warm me up. I love the way they have lost the smell of mildew and old sweat and have taken on the freshness of the Downy dryer sheet. I love that they have lost their crisp edges from being folded wet - and have again turned fluffy, soft, and cloud like. They are no longer dull and drab - the way they seem to hang after a week of morning use - but full of life again - they've almost doubled in thickness from one round on the permanent press cycle. If I died today - I could be buried in a mound of freshly washed and dried towels and certainly rest forever in peace.
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