unity - How do I wait to execute code?

I'm trying to make a relatively simple elevator (which essentially teleports the player), but I don't want it to instantly teleport them. I want the player to enter the collider, wait 2-3 seconds, and then do it to take make it seem somewhat more natural.

My code thus far:

using UnityEngine;
using System.Collections;


public class Teleporter : MonoBehaviour
{
    public GameObject TeleportTo;
    //public Material NewSkybox;

    void TimerInvoke()
    {

    }


    void OnTriggerEnter(Collider other)
    {

        Vector3 displacement = other.transform.position - this.transform.position;

        other.transform.position = TeleportTo.transform.position;
        other.transform.position += displacement;

        //RenderSettings.skybox = NewSkybox;
    }

}

Also if possible I'd like to stray away from coroutines. How should I do this?