We talked about this earlier as well for slippers, but you can add a grip to shoes as well with the help of a glue gun. Children tend to be rather clumsy when they are walking, so they are almost always under the risk of falling down during this chore and then injuring themselves. This isn't something that you want to happen, so prompt action should be taken here.
Grab a glue gun and your child's favorite shoe and get to work. All you need to do is make small dots and a big line with the glue gun at the bottom of their shoe. This will add an additional surface and would make life easier for your child as they walk around. No more falling and no more injuries with this brilliant hack for parents to implement.