Ask local grocery stores to donate grocery bags (paper) to your class. These are great for grocery store week. Create a grocery store in your classroom.

• Set up grocery store shelves (you can use existing bookshelves, boxes, etc) in your classroom (Use real or play food)
• To make a conveyor belt, loop black paper around a table and tape the ends together (tape one end of the paper to the other end) the paper will roll just like a conveyor belt.
• Add a cash register to the end of the table to complete the effect.
• To make grocery carts use large boxes with all the flaps (except the narrow end) tucked into the box. Use the narrow end flaps as the handle. For added emphasis your children can cut and glue on silver metallic paper or aluminum foil.- you can also use any cart you have around the classroom
• Grocery Bags, ask local grocery stores to donate grocery bags (paper) to your class

Seperatate youur children into groups and give each group a section of coupons out of the Sunday paper. Have them pick out a snack food. Send home the coupon with a note to your parents asking them to buy that food for snack. Ask local grocery stores if they will let you take a "behind the scenes" field trip to their store. Almost all stores will. Your children will enjoy seeing were trucks are unloaded and the food is stored before being displayed, etc.
My class of visually impaired preschoolers goes to the grocery store every year. Each child has a grocery list-- a 3x5 card with a food item in print, braille, and a picture. Everything Preschool >> Themes  >> Grocery >> More