Maple Set by The Federal explores an alternative to the kitchen knives you see every day. Focus is drawn to the high polished blade, while the rest of the knife's Maple wood body sits warmly in the hand and blends in to its surroundings.
I found this sticker for the fire extinguisher at Amazon: https://www.amazon.com/gp/product/B00MB1ORIW/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00MB1ORIW&linkCode=as2&tag=thegreenwal (Diy Ideas Office)
Lighting signage for a hotel. This gave me another idea. If you placed 2 black lights in the positions of the normal lighting on this signage you could have the logo or type in UV o the wall enabling the black lights to highlight this.