I love things that hide things. I especially want that bathtub and the vent/safe. The TV hiding all the other electronics is a great idea, but I'd imagine there'd have to be some kind of sensor in order to work the other stuff.
Inexpensive craft store frames fit perfectly around light switch covers! --I like the LOOK Expensive (but not really BE expensive! -- 31 Easy DIY Upgrades That Will Make Your Home Look More Expensive--
Mirror in bathroom so can see the back of head. How To Hide Unsightly Wall Panels - tutorial shows how to attach hinges to a picture and wall so switches, access panels, etc. can be hidden, yet still accessible. This is not recommended for thermostats!