Another friend and her husband renovated an old tavern in MA, where they lived for a number of years, and she saw things, including a feather that appeared out of thin air and floated to the floor. She’d smell flowers, when there were none in the house, and one day when they came home...having left their twelve year-old son home alone...he met them at the door and wanted to know who the old man in the nightshirt was. Evidently he’d been on the front stairs when the old man passed him, climbing upward, carrying a candle.
Only later on did the owner of the house admit to his wife that the first night they’d slept there, he’d waked up to see an old man flanked by two women in old fashioned clothes standing at the foot of their bed, staring at them. After a moment, they faded away...having checked out the new owners!
Similar feather appearance here following the death of a son on a winter day with the house closed up. It just floated down while my wife was thinking about him.