Wordpress post plugin?

I'm helping a friend update their stamping website ([login to view URL]). The site has ideas and tutorials on scrapbooking/stamping projects, and on a lot of them she has to include what items are needed for that project. At the moment she's just including the items in the post, but she's asked if it's possible to include a box at the bottom of some of the posts so it could look slightly different from the rest of the post which she could automatically update with the info. If you have a look at this website, [login to view URL] you will see at the end of her post she has that box, that has stamps, inks, cardstock, and assecories etc… that's the type of thing we're after for Makeesha's site. It probably doesn't need to be quite that big, but Makeesha would like it to match with her current theme and maybe have a butterfly in it (an example photoshop image of what we could use is attached). Also she would need to be able to type into it the details without knowing coding. Is this possible to do with a plugin or something?