Twist lock in-celing speakers. Trim ring goes in for painters. Then you come back and push the speaker up/twist...lock. Done. This already exists but it didn't when i came up with the idea 20 years ago. The first time i had to deal with painters dictating my schedule i thought...boy wouldnt it be great if they could just paint the trim ring and get out of my way...

There are shared space think tanks everywhere now. A bunch of designers engineers sit around all day thinking of gadgets toys apps etc. The one thing you have over them is experience in your industry. An engineer and designer would never have thought about an HDMI tester...but you did...at a job one day.