It doesn't exist once you step out of the shower
It doesn't exist once you step out of the shower
I do this and keep a reusable/editable checklist on my phone (Google’s Keep Notes since I use android) and continually add to it over time.
If I remember needing something and I have my phone, I can add it. This lets me run through the list to see if I can add anything else or need to uncheck things I might be running low on. Every so often at home, when I remember, I also go through the house to add any consumables I use; leaving unchecked if low, checking off if good for now.
When I’m in the store and the compulsory feeling of forgetting something hits, I go through the checked to uncheck whatever I can remember I need or am running low on, then add what the store has to my cart/basket. I then will only check things off right before I go to/while in checkout or when putting them away at home.