When curating the contents of goodie bags for an event, what factors should one consider to ensure that the items are both delightful and memorable? Is it essential to tailor the selection based on the age group of the recipients, or perhaps the theme of the occasion? Should one include a balance of edible treats that tantalize the taste buds while simultaneously incorporating whimsical trinkets that evoke joy? Might there be a merit in adding personalized items that would cater specifically to individual preferences? Furthermore, how do practicality and creativity intersect when determining the most appropriate souvenirs? Could one contemplate the inclusion of eco-friendly products to align with contemporary values, thereby promoting sustainability? As festivities approach, how might one strike the perfect balance between budget constraints and the desire to impress, creating an unforgettable goodie bag that resonates with attendees long after the event has concluded? What are the essential items that should unequivocally be included?