Ok, it's not exactly re-inventing the wheel, but if you want an everyday or weekend bag with some retro style, you might want to check out the Adidas Adicolor vintage airline bag.
It's a slight reworking of the classic flight bag, with a large compartment for your weekend essentials, an additional zipped pocket, adjustable strap and all that classic Adidas detailing.
Three original colours to choose from, all selling for £39.