A solid object that lets electrons move easily through it is called a conductor.

Here are some examples of conductors:

* Metals: Metals like copper, silver, and gold are excellent conductors due to the free movement of electrons in their atomic structure.

* Graphite: This form of carbon has a layered structure where electrons can move freely between layers.

* Electrolytes: Solutions containing ions that can move freely, allowing the flow of electrical current.

Let me know if you'd like more details about conductors!