Trunk bag only needed for when the temps swing a large amount from 6 am to 4 pm. Otherwise I use a wedge bag for flat repair stuff and tools, frame mounted pump, and a handlebar bag for rain gear. There is enough room in the wedge and handlebar bag to accomodate anything that I don't want in my pockets (or lack of pockets, as it may be). So pagers, cell phones, ipods, glasses can be accomodated and kept dry. But I only have to transport myself to work, nothing else.