Actually not my idea, but the more I think of it, the more I feel enthusiastic about the opportunities it offers.
Credits go to @niklas.haljesgard
After adding a Virtual Device to Google Home you can use it e.g. to trigger scenes or automations on the Heart using voice commands.
I think this idea is too good to go under in the support forum.
But always be aware, that virtual devices are all switched on after rebooting the Heart.