Having a very active little one, it is needed to keep first aid kit in the house just in case I will need it in the future (God forbid). I am also planning of having a medicine cabinet where I can store all the medicine and my first aid kit. In this way, I will be able to put everything in one place so it is easy to locate if needed.
After all, it is better to be prepared and equipped because sometimes things happen so quick that you will only have short time to respond to it. If someone injured then you can give them first aid while waiting for the medical team to arrive. In most cases, the earlier we do something the safer it is for the injured person. However, please make sure you know how to administer first aid prior to doing it.