There are several different cases that are perfect for kids and if you are looking for a good and quality smartphone case for your child you might want to take a look into them.
A good and solid case does not have to be expansive but it does have to provide a strong protection and be resistant from dust, drops and scratches.
One of my favorite cheap cases is the KAYSCASE Heavy Duty Cover. Its rugged back allows a better grip and the chanced that your boy or your girl drops the device are much lower so this case is definitely better when it comes to protecting your device from drops.
If the smartphone will slip out of the hands, the case itself will absorb the impact and the S5 is much more likely to be saved than from without this case.
Anther great budget case for kids is the SUPCASE, this one looks really slick and fashionable and might provide a little less protection but it is also a bit less bulky so this is a kind of a trade off between the protectiveness of the case and its bulk.
Don't be mistaken, this case will also save your phone when it falls and will help preventing bruises and scratches.
If you are looking into a bit higher level of cases and you really care about the protection of your new phone, you might went to consider the Armadillo Series 2 Layer Armored Hybrid Cover by i-Blason, this one is one of the best cases regarding protection that are available out there and it will do a wonderful job keeping your Samsung Galaxy S5 safe.
It also looks really nice so you can be sure that your child will enjoy showing off his or her friends their new case
There are many other case that are considered great but no other than the Otterbox series. If you are looking for a case that is completely on a different level, at least regarding its protection level you can ready all about it in one of my previous posts and learn all about the different available Galaxy S5 Otterbox Cases Types