To make grocery shopping more manageable when my kids were younger I used to give them a little list of grocery items I wanted them to look out for during the shopping. This helped to keep their attention and made it a fun experience for them.  

Read my blog post about why you should create grocery lists.

This is an A4 sized page with 3 lists on one page.  Cut the page into 3 to make it more manageable for your child to hold in their little hands.