Certainly! Here is a test case generator for the problem statement you've provided:

```python
import random

def tcgen():
    """
    This function generates test cases for the allowance problem.
    """
    # Generating three random integers A, B, and C between 1 and 9 (inclusive).
    A = random.randint(1, 9)
    B = random.randint(1, 9)
    C = random.randint(1, 9)
    
    return A, B, C

# Example usage:
if __name__ == "__main__":
    for _ in range(10):  # Generate 10 test cases
        A, B, C = tcgen()
        print(f"{A} {B} {C}")
```

### Explanation:
- **A, B, C**: These variables represent the digits printed on the integer panels. Each is randomly chosen between 1 and 9 inclusive.
  
### Example Output:
Running the above code might produce outputs like:
```
5 3 1
8 2 4
6 7 7
1 9 3
3 3 2
2 8 5
7 4 6
9 1 1
5 6 8
4 2 9
```

Each line is a test case, representing the values of A, B, and C which you can use to test the game logic for determining the maximum possible allowance.