“Modding is the ultimate form of Cheating” and I made a video that will come out after I’m done completing OpenMW. Parts of this overlap with what was done in this guide.
For starters let’s do an Elixir that recovers everything.

Let’s put it inside the left-most vase after going down from the Silt Strider on Balmora.

Then edit that record to have that new item.

And let’s also make a Cheater’s Amulet with the same effect but constant (every second).

Now we need to clone Fargoth or any other NPC.

Then edit his/her dialog.

In the scripts you can use console commands: player->addItem "p_elixir" 1 to get the item and "Fam"->resurrect() to make the NPC immortal.

If you’re wondering what commands are available check this list and this tutorial to get you started.