The case with the small children is the same like Mobile that we can't spare them as they are too small & is ready to take care of themselves. So we have a limitation of keeping those altogether.
So what could be the better option here?
We can go ahead with the dummy toys which although not real & not having disadvantages but still at the same time this will keep them busy. But to my personal experience that if we become over smart in befooling them they are smart enough to understand this soon.
Though we should not give these costly gadgets in the hands of the children but still sometimes out of affection and love, parents give it and that is the start of the chain reaction of asking for it by them.
Knowledge is power.
While we cannot stop using gadgets and mobile in front of children, we can be careful about minimising the attractiveness and have other toys and devices that the child can develop an interest in. As they grow up, we can set an example by we ourselves reducing the addiction to phones and tabs for entertainment and passing time.