I meant high tech gadgets, but sure How to grow fresh air | Kamal Meattle https://youtu.be/gmn7tjSNyAA?t=11 https://youtu.be/gmn7tjSNyAA?t=11 https://en.wikip

I meant high tech gadgets, but sure How to grow fresh air | Kamal Meattle https://youtu.be/gmn7tjSNyAA?t=11 https://youtu.be/gmn7tjSNyAA?t=11 https://en.wikipedia.org/wiki/NASA_Clean_Air_Study#List_of_plants_studied https://en.wikipedia.org/wiki/NASA_Clean_Air_Study#List_of_p... On a second thought, indoor DIY growbox is probably can be considered as such device.