We moved plants into pots before the viewings, so it was clear they would come with us and told the buyers about it. Just a couple that had special meaning for us.
I left my beloved fruiting dwarf cherry tree behind.
We hadn't done a lot to the back garden, it being a brand new build in an estate and we were only there 30 months. The front had mostly been planted up by developer (all houses) but we had added a few plants and a couple of those were presents from others.
Where we were going to, we had a much more open front garden (no fences or walls) and there were a lot of kids playing football etc on the green in front so we already knew lots of balls on plants etc. The back garden was a bit of grass surrounded by leylandii trees so we weren't going to do a lot with it fast but it needed serious work. (First jobs were things like new windows, new bathroom, new kitchen, new carpets and curtains almost throughout, paint throughout - all within the first 6 months!). So we only took what would last for a season in a pot.
But we were up front about it.
We also changed out the bathroom toilet roll holder and those bits for similar style but much cheaper - but again did that before viewings. (The ones we took were wedding presents). And changed 1 nice lampshade which we had only recently bought back to the paper shade we'd used prior to that, to take the nice one with us - but again, the buyer only saw the paper one.
Our vendor asked if she could take the horrible orange pine bathroom fittings, and if we'd buy the cooker and fridge from her. We said no to both - only to find massive holes in bathroom walls where she'd ripped off the fittings, and left the stinking old fridge and cooker behind after all (we'd actually specified that they were to be removed - we later had to send them to the dump at our expense as they were not only surplus to our requirements but unusable by anyone else).