It depends what sort of mood you are in and how you feel about the buyers.
I left mine a tray with kettle, mugs, tea, coffee, bixcuits
Matching tins of paint, labelled. Sets of keys for windows, doors, shed, gate, stopcock. Burglar alarm code. Instructions. Starting set of cleaning stuff (new). Clean bins. Key to wallsafe. Loo rolls. Spare lightbulbs.
New front door lock in packaging, identical to existing so it would swap straight in (it was a bit special)
The woman arrived while I was hoovering round where furniture has been and I asked if she wanted the hoover (had already equipped and moved into the new house and removal van had emptied it the day before).
You will feel better if you leave it nice.
And a year later they found cash and jewelry in the wallsafe and posted it to me.