A big yes to the whiskey stone. I have a couple of large metallic spheres and they work great to cool down the espresso + milk (cold milk, no froth)

This is one of the reasons why working out in VR with games such as Beatsaber and Ragnarock impacted my health quite positively. Workout is no longer an inner battle trying to fight myself, but a very enjoyable hour of my day(but it’s important to move ASAP to both games’ higher difficulties!). Have been doing it for almost two years and it doesn’t get old. I’m also quite musical, so that might have a lot to do with the enjoyment.