My 18 month old son has started throwing toys and sand from his sand box. The toys he throws are inside and outside. I have tried time out and time in. He could care less about either one. I guess he doesn't see them as punishment. I've also taken the toy away that he throws and kept it away for 1-2 days. He just plays with (and throws) something else. I have used my last bit of patience with this situation. I don't know what else to do. He's been doing this for about a month now. Please give me advice on what to do and how to keep my sanity and patience while doing it.