Oh, I do this plenty - walking around, executing 4 different tasks and forgetting items along the way.
Or, while walking, I assign the items to categories and try to carry them with the correct hand currently associated with their category and order the steps of depositing them so I can complete the collection and delivery task, mixing up categories and item order, thereby instantly and reliably forgetting where I put the required items 90 seconds after I've finished my rounds.
It's funny to retrace my steps and find an item in a completely unlikely spot since it was at the wrong position in my delivery stack, or because the sensation of the item in my hand made me think it would be something different while I didn't look at the items any longer after the first, cursory glance.
There is definitely a mechanism that prevents actual, readily available sensory information to be processed. Things can absolute become, for all intents and purposes, invisible. This can range from full blown flower bouquets put up all around the place that I don't notice for weeks, or a 4 feet pile of dirty clothes that I amassed somewhere, but that completely vanished from my field of vision, even though I walked past the thing at least 4 times a day until someone mentions it to me and it's right there, next to my office door. Before we both walked to the pile, I had no idea what they were talking about. Upon seeing it again, I was flabbergasted.
Nowadays, I have developed coping mechanisms that prevent most of these pitfalls though. It probably surprises neurotypical people that so much planning and energy goes into what should be easy, effortless routine tasks, but it's simply a different brain. 🤷🏽♂️
Plenty of advantages, too, so once I had a handle on the fundamentals of life without completely exhausting myself, it became mostly amusing. The odd lapse does in fact annoy, though.