Ah, yes, the garden variety backpack, an underappeciated cycling accessory. I've had the same pack for 5 or 6 years. I've made a few mods to it. Added reflective tape to the straps and on the side that faces rearwards. I've also come up with a system where I stuff the pack inside out into one of the zippered pockets and then use some small straps I sewed on to attach it to my handlebars. What do you think?