Maybe woodworking? It can get dusty and you need some room but you can also make smaller things that don’t need big power tools or a lot of room. Like miniature things.
Or computer programming. Create an app. Or do something fun like follow one of the coding challenges from the YouTube channel The Coding Train
Sure, but if there is too much electricity on the net, things will start to break. That electricity has to go somewhere. No one wants to buy electricity because everyone is trying to get rid of their surplus.
About the negative, I don’t know.