If someone has misplaced a familiar object like a wedding ring or wristwatch, they might say they "feel naked without it", or that it's "like a missing tooth".
It's not exactly "pining" for something, and "Saudade" or "Sehnsucht" is too extreme.
The person might not even realize which item is missing, or it may not be missing at all, only moved to a different place; but because of habit the person expects it to be in its old place.
Is there a noun or noun phrase for this feeling that is more specific to misplaced objects than "disorientation", "nagging uneasiness or "lingering anxiety"?