I know one example of advertising that I liked: the creators of Penny Arcade had only advertisements for computer games that they liked. And they made those ads in the same art style as their own comic.

Advertisements are good when they’re an honest endorsement. Any others are inherently deceptive and often invasive.

There are also showers that reclaim shower water while you shower. Most water goes down the drain clean. It’s apparently easy to separate that from water that’s mixed with soap and dirt, and send it back op the shower again. This can dramatically cut back on your water use much more effectively throttling the water flow.