Like anywhere around your house, your custom designed shed could be home to a number of different things that could hurt or harm anyone going into the area. Minimising the threats throughout your home and garage is the best way to help stop people from getting hurt. However, the main difference between prepping a commercial shed and a residential one is that children could be coming and going more frequently, which means ensuring hazards are well out of arm's reach.
For example, even the main entrance to a custom designed shed could be dangerous for unattended children. To ensure your door is secure, take a close look at all the nuts and bolts involved to make sure they're tight and secure. Furthermore, make sure all the garage door wheels and tracks are adjusted and aligned properly. Also be sure to provide adequate lubrication where needed.
Many problems with these occur when they begin to stop working as smoothly as normal and people begin pushing or pulling them harder than necessary. Avoid these situations from happening by tending to regular maintenance towards creating a shed that works like clockwork.
Often sheds are used in residential areas as an alternative storage place for things like gasoline and pesticides - the types of things you don't want lying around inside your home for people to stumble across.
If you're going to be storing these kinds of substances in the garage, make sure you put them in specifically designed storage places that are up and out of reach from wandering young hands. Or perhaps putting them under lock and key could be another option. Regardless, taking steps towards protecting your children should be one of the first things done following the construction of your new shed.