One time we (my family) went to Walmart at 8 p.m. (don't ask). My dad and brother were in the store while the rest of my family was in the car. My sister and I suddenly need to go to the bathroom. We went inside the Walmart. We saw a plastic bag drifting in the wind (important detail). We went to the bathroom. When we got out we were lost and my sister thought we were gonna be lost forever (smh). I remembered the bag and tried to find it. When I found it I used big brain memory skills to find the car.
TL;DR:I found out how to make a mental map using a marker.