Feature Request: History Graph inside the card

It would be great to have the possibility to add an history graph inside this card, coudl be either a bar one (vert/hor) or line...
This will make a great compact cart to monitor appliances where I can see the current power, the last few hours one and all other parameters (like voltage, current, etc) while using the horse-shoe to have a graphical view of the current power (I do use color step to mark in red the appliance that are going above a certain threshold)