What Stupid Things Have You Done To Your RV?

Packed the RV early morning in the dark and thought I would pull around front of home to add on the cargo carrier and cooler. Walked around the RV in the dark looking at the exterior but NOT looking down enough to see that the electric was still plugged in. Pulled away and pulled the connection plug right out of the RV. Easy remedy....I made a series of spring clothes pins with several notations on them....Electric...Water...Antenna, etc. and place them on the gear shift so I see them before I put the RV in gear. Cheap and easy fix to an embarrassing and costly mistake.