If you'd rather have a small backpack than a fanny pack or need a little more capacity, the Black Diamond Magnum daypack (a little over 1000 ci) is nice...I just picked one up for trail running and day hikes and am pleased with it. I am finding myself using it for other general outings as well. It has a webbing waist belt and sternum strap for stability which is good for running, but even with just the shoulder straps it doesn't seem to bounce around too much even for someone my size (short and skinny). And it just looks like a normal day pack that anyone might carry while out and about.