Yeah, @the_angela is totally right. I see this everywhere, like with baking. You can have a fancy mixer, but if you just guess on the flour, your cake will be a mess. The simple act of measuring makes the biggest difference. It's the boring basics that actually get you good results.

Honestly, it feels like overkill. Most guests I know pack their own basics. It's not a hotel. Having a spare charger makes sense, but a toothbrush? That's weirdly personal. I'd feel awkward if a host handed me one, like they expected me to forget my own stuff. It just adds clutter to my cabinets for a maybe once a year visit.

Tbh a lot of DIY setups just protect the obvious spots. Pros actually know where to look for the sneaky gaps.