Clear surfaces before you add anything
Empty counters and floors do more for a showing than extra decor.

Pack until each room has one job: sleeping, cooking, eating, or sitting. Buyers are trying to see the floor, the counters, and the walls. Extra decor on top of a full counter makes that harder, not easier. Clear first. Add nothing until the room already reads as that one job.
On a kitchen counter, leave one or two useful things: a kettle you use, or a board, not a crowd of jars. A clear stretch of counter photographs as work space. Do the same on a dresser and a desk. In the bath, leave the soap you are using and put the rest in a bin under the sink. Floors get the same rule. Pull chairs, baskets, and small tables off the walking path. If two people cannot pass without turning sideways, one piece leaves the room.
Store packed boxes outside the photo frame. A dining room full of bins reads as storage, even if the table is pretty. The garage, a closet you will not open, or a room you will not photograph can hold the boxes for now. Label them by the room they came from so you are not opening every box on a showing morning. A roll of tape and a marker are the whole kit.
If you still want one added piece, make it useful and singular. A lamp that works on a side table is enough. A made bed is enough. Do not buy a tray, a new vase, and a set of pillows to solve a room you have not cleared. Those extras are often $20 to $60 you do not need, and they land on the surfaces you just emptied. Walk the path you want photographed and take one more thing off each surface before you call it done.
What to do
- Give each room one job and clear it to that job.
- Leave one or two useful items on a counter, and pull furniture off the walking path.
- Keep packed boxes out of the rooms you will photograph.
- Add nothing new until the cleared room already works.