1. Works of art: such as famous calligraphy and painting, bronzes, porcelain, jewelry, etc.

2. Antiques: such as ancient cultural relics, Four Treasures of the Study, coins, stamps, etc.

3. Primitive art: such as primitive artworks and cultural collections in Africa and South America.

4. Rare animal and plant specimens: such as fossils, insect specimens, animal horns, etc.

5. Souvenirs, limited edition items and luxury goods: such as souvenirs, limited edition items and high-end luxury goods obtained from different places.

6. Books, manuscripts and historical documents: such as precious handwritten ancient books, extraordinary manuscripts and ancient documents that have a great influence on human history.

7. Film and television entertainment products: such as star signature items, classic movie posters, etc.

8. Treasured wine warehouses: such as aged wine, unfiltered or barreled raw wine, national famous wine, etc.

In short, the choice of collection depends on personal interests and preferences. As long as these items have unique historical, cultural, artistic or scientific value, scarcity and good preservation and appreciation potential, they are all worth collecting. However, before collection, it is necessary to have a necessary understanding of professional knowledge to avoid buying fakes or taking improper storage methods.