Keep all your things visible in a hotel room, not in drawers, and all gathered into one spot. That way you’ll never leave anything behind. If you need to have something like a charger off to the side, place a couple of other large items next to it, because you are less likely to leave 3 items behind than just one.
The most credible empirical research often comes from studies that have a clear and transparent design, where the assumptions are laid out for everyone to see.