i saved some of the carboard tubes from toidy paper. i stick 4 of them into a small coffee can; i can fit all sorts of things into it.
i also took one of the small cans and put it inside a large one. more tubes go around the small can.
someday i'll make fancy shmancy drawstring bags to cover them. for now, when i need portable toolishness, i just set the cans into a tote back right-side up and off i go. :-)