How to avoid duplicating implemented getter function in PHP

While this question is about methods of solving this problem, I am particularly interested in good clean OO design and solutions that conform to current PHP best practices. Thanks in advance for taking a look.

I have the following interface:

<?php

interface Tool {

  /**
   * Return the unique name of the tool
   */
  public function getName();

}

The majority of classes that implement this interface in my project looks like this:

<?php

class Drill implements Tool {

    protected $toolName = 'drill';

    public function getName() {
        return $this->toolName;
    }

}

And so the problem is I have dozens of classes that repeat this logic, duplicating the $toolName property and getName() logic, breaking the simple rule of 'Don't repeat yourself'

One solution I have considered is the following:

<?php

abstract class BaseTool implements Tool {

    public function getName() {
        return $this->toolName;
    }

}

Then simply have tool classes extend the abstract BaseTool class:

<?php

class Drill extends BaseTool {

    protected $toolName = 'drill';
}

However this now means that I lose the ability to force implementing classes to define the function getName() if they extend the BaseTool class, which can lead to incorrect implementations.

I also think that by having the BaseTool class return $this->toolName, it is making assumptions about the implementing classes and breaks encapsulation.

I have used a simple example to demonstrate the problem but hope you get what I'm trying to solve, and that this problem may also relate to more complex situations. Appreciate your thoughts.