3. **What are some tips for preserving and displaying Walking Dead collectibles, such as action figures, posters, or props, to maintain their condition and value?
4. **Have any specific Walking Dead items or replicas from the show been used in significant ways by the production team, and how do these items impact their desirability among collectors?
5. **Are there conventions or events dedicated to The Walking Dead where collectors can buy, sell, or trade memorabilia, and what strategies can new collectors use to navigate these markets?
What are some of the most popular non-sport trading card series currently available on the market, and how do they compare in terms of popularity and collectability?
Can you explain the rarity and significance of promotional or limited edition non-sport trading cards that are released at events or as part of special marketing campaigns?