Thought having a list here might be better than in the General Forum - feel free to add yours here
Bonsai Tree - especailly the Cherry, spice and a itty bitty paper tree, these could be harvestable?
Bubble Tube lights - Mood lights ones that change with sounds or touch
Cello case - large size cupboard or vertical bed
Coffin - horizontal or vertical for closet or vertical bed
Indoor water feature - with animation and possibly sound?
Outdoor water feature. pond, pool, waterfall wishing well or a fountain
more to add :)