This takes almost no time, and might be a good one to start with if your child is discouraged.
We use two quick cartoons to illustrate. For 0, we just show them a hungry 0 eating all the other numbers, anything times 0 is 0!
Snapshot from video showing hungry zero bouncing around eating up other numbers.
For anything times 1, we show a quick animation of a 1 disappearing, in other words, anything x 1 is the other number:
Disappearing “1” snapshot from Fun Times Tables! app.