Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt

Explanation

To determine which objects shine from the given list, we need to identify the lustrous properties of each object. Lustrous objects have a shiny appearance, which is typically seen in metals and some glass materials. Let's analyze each object step by step.

### Step-by-Step Solution:

1. **Glass Bowl**:
- Glass is a material that can exhibit a shiny surface. When light hits the surface of a glass bowl, it reflects, giving it a shiny appearance.
- **Conclusion**: The glass bowl shines.

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