Open-Air test bench v.s. Closed cases

I have never used a test bench before and am interested in getting one for my main rig. (for shets and giggles)

 

Does anyone have a pic of their Open-Air bench build? Could you share your experience with dust or temps or whatevs..

 

Am I dumb for wanting this? lol

As long as you don't have any pets that can climb on it, kids that could put their cheetoes on it, friends that won't accidentally spill their beer on it on a binge night. Basically if you have it in an area that does not see alot of activity you should be ok. Don't expose your parts in public ;)

I can only find 3 on amazon... Any idea where I can find a nice, very clean looking one?