Packing List
As long as you stay in Reykjavík and don't camp, a wheeled piece of luggage should be fine. For the day trips I went on, I brought a backpack for little things, like my camera and guidebooks, water, etc. This pic to the left shows what you need, a big comfy, warm, Icelandic wool sweater. It is so warm, I only wear it when it gets really chilly here (and that is like two days of the year!). But there you have to wear it a lot! Other essentials: Raincoat, liner, umbrella, wool hat, heavy boots, warm wool socks, heavy pants, long underwear, etc. I don't have the foggiest what you should wear in the summer. (Maybe check out some other Icelandic pages for that!)
