To some people this may seem too obvious. To others this may seem genius! I'm hoping for the latter.
This is something I do around our house all the time. No, we don't have small children, but we do have cats and a 3 year old niece. Safety is important.
Instead of unplugging an outlet plug and placing it God knows where on a nearby table or on the floor, secure it snuggly over the cord that you've plugged in. This way you can find it when you unplug the cord.