Rental or non-custom kitchens often have an unfortunate design detail: wasted space between the top of the cabinets and the ceiling, which leads to all sorts of conundrums. Instead of bemoaning your lack of floor-to-ceiling cupboards, make the most of what you've got and try this trick: hang wallpaper above the cabinets!
As you can see, this Finnish kitchen has a blue backsplash, but bright yellow patterned wallpaper above the plain white cabinets. It completely transforms the room!
(Image: La maison d'Anna G)