Small image of iPad circled on iPad: meaning?
First time I’ve ever seen this. A little box appeared on the iPad Home Screen, containing a green circle around a picture of an iPad.
Tapping it has no effect. It’s on the right, beneath the app suggestions.
What is it for?
That is the “Batteries” widget. You can edit/remove it by long pressing on it.
Likely it got added by mistake by somebody using your iPad.