Avoid duplicating template sensors using YAML anchors and this.entity_id

[Sir_Goodenough ((SG) WhatAreWeFixing.Today)]

This has been around for quite a while.
I use a couple of anchors here and there.

Solved: Reuse code with YAML Anchors and more

Here are three methods for reusing code in Home Assistant / YAML. First, be sure you’re using Lovelace YAML mode. METHOD 1 - Anchors Define anchors (the code you want to reuse) using the & key You can define anchors when you’re using code for real, or you can create dummy entries like this in a Lovelace file (Be sure YAML code that creates anchors comes before the YAML code that uses the anchors): dummy_colors: color1: &yellow_gradient 'linear-gradient( 135deg, rgb(253, 235, 113) 10…