I use a small Mac laptop. I have had it for 4 years now, and I was reluctant to make the switch to a Mac, but I am so glad i did. It runs as well now as the day I bought it. I love the free classes at the Mac store, and the free helpline I can call when I have a problem. Its lightweight, and I love it.
I have used a Steripen now for several years. It purifies a litre of water in about 45 seconds. I hate constantly throwing away empty plastic bottles, and in some countries they have been known to refill bottles with tap water, and reseal them with a hot needle. Steripens are available on Amazon and I bought mine at MEC here in Vancouver
I recently bought a new camera and the sling bag I had previously used was not big enough to carry it. I have purchased a Lowepro Camera Bag to use as a day bag. It has a zipper that allows for expansion, so on travel days I can also carry my computer and other important items. I prefer this style bag as it lays across the front of my body, and is hands free. As it is a cross body bag so deters snatch thieves.