2) A cheaper alternative to bottled water is filling reusable stainless containers with your tap water. Tap water comes from a local source of which the quality can be determined, and doesn't need to be transported all over the country to get to you. Adopting this practice also reduces the amount of plastic produced for single use bottled water.
3) A reusable stainless mug has many cost savings benefits. First of all, if you fill your mug in the morning before leaving the house, you won't have to stop at a coffee shop to purchase their overpriced coffee or tea. Plus, because the coffee or tea in your mug stays warm for a long, long time, you will not need to run out to get a second cup because your coffee went cold. Beverages in mugs stay warm forever it seems whereas those in paper cups go cold very fast. Later in the day, if you do need to stop at a coffee shop for coffee, they will often give you a discount for having your own mug. I have also been known to bring my own tea bag and fill up my mug with hot water provided by the restaurant to make my own tea free. Granted, I do purchase other items while at the restaurant, I am not quite that cheap.