About these questions all you people are asking...
Maybe I'm just a genious, but I really think most of these (for example, the ones with the lighting-up the eyes and the watering the bombs) you could solve yourself, leading to much better entertainment. Both of those stumped me, too, but that led to me trying more different things and thinking more creatively, rather than asking for help. I recommend asking for help when a problem really starts to hinder you, and you would have more fun if you just get past it because you have already wasted large amounts of playing time; or if you feel that you are missing out on some aspect of the game that you should be enjoying. But if you can't solve a puzzle... that's the idea. Puzzle are meant not to be solved easily, and some of these are just too easy to really give your average person any trouble. I don't mean to seem like I'm trying to force you not to ask for help, or like I am assuming way too much and this is not at all the case, as it may well not be, but still, I think you should be trying a little harder.
But a good example of some questions that, IMO, are worth asking because they will just get in the way of the rest of the game, are the pictographic quests. It took me a while until I found the guy who said "I wonder if the Rito postman has come yet" and then it clicked. I was looking at night for someone who was actually WRITING before. Eventually I got the picture, but then I decided to check some FAQs, and I'm glad I did, because some things aren't worth spending that much time on. The coward guy is in the coffee-shop... just throw a pot near him or roll into the table and take a picture of him as he's looking around.