1) The excitement of surprise: Capsule toys offer a sense of excitement and anticipation as the buyer never knows what toy they will get until they open the capsule. This element of surprise makes collecting capsule toys more fun and engaging.

2) Affordable and accessible: Capsule toys are relatively affordable, usually ranging from a few cents to a few dollars, making them accessible to a wide range of people. Additionally, they are often sold in vending machines found in public areas, such as train stations or shopping centers, allowing for easy accessibility.

3) Collectability: Many capsule toys are part of a series or collection, encouraging people to collect them all. This aspect of collectability creates a sense of accomplishment and satisfaction when a complete set is obtained.

4) Unique designs and themes: Capsule toys come in various designs and themes, from popular anime characters to cute animals. This variety of themes and unique designs appeal to a wide range of people and their interests.

5) Novelty items: Some capsule toys are designed to be novelty items that are quirky and amusing, such as miniature food replicas or toys that transform into different shapes.