Hello Deborah! Welcome back to the Disney Parks Moms Panel.
Epcot is my favorite Walt Disney World Resort Theme Park for a "Crawl"-type activity. The design of both Future World and World Showcase are natural designs for progressive-style planned adventures.
Depending on when you plan to visit, Epcot has several activities that take you around World Showcase looking for various items. During the
Epcot® International Festival of the Arts, you can search for works of art with Figment’s Brush with the Masters Scavenger Hunt. Designed as a traditional egg hunt, Egg-stravaganza during the
Epcot® International Flower & Garden Festival has you combing World Showcase for all of your favorite Disney characters (in egg-form). Finally, you can search for ingredients for the signature dish during the
Epcot® International Food & Wine Festival and Remy's Ratatouille Hide and Squeak.
If you prefer to make your own activity, I recommend involving the Cast Member hosts in the various country pavilions in World Showcase. With my younger children, we gathered the passport stamps but also included how to say a simple phrase in each of the host country's native language (Hello, my name is..., Thank You, etc). During that same visit, we tried to get a simple souvenir from each pavilion that the Cast Members recommended and described the importance of before purchase (like the Christmas pickle in Germany).
You say you did a "candy crawl", but I much prefer a "dessert crawl" myself.
Happy Adventuring!
~Todd