Scandinavian style cardboard House with cut patterned cat and heart that can serve as housing for animals or toy for children. Colours (flags and like OMG! get some yourself some pawtastic adorable cat apparel!
Minimalist IKEA Cabinet Hack, and lots of other ideas on hiding a litter box. Not just for the litter box but for a dog's or cat's pet bed, when company is over or just during the day, just shut the door and it won't have to be seen until bedtime.