For the first year I was at KetoKrate, an accordion fold insert went into each box. Each insert was usually wildly colorful, seasonally themed, and contained recipes, inspirational stories from subscribers, and other relevant features. Occasionally, we threw in a craft, like this fortune teller and the paper chain below!

Note: The question, "How many carbs did you eat yesterday?" on the fortune teller to the right did not end up in the final design seen below.