I easily spent about 15 hours for Physics this week. From STEAM fair presentation time, to prepping for it as well, to watching the discussion videos, replying to everyone, and regular class-reflection time.
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.