Quite possibly the cheapest and simplest way to carry your tools and spare tubes. As a city rider who has had very bad luck with saddlebags (it dropped my wallet!) and despises the sluggish feeling of a bike weighed down by stuff, I admire this waterproofed cotton burrito wrap. For a few seconds I pondered over making my own, but the description is correct: "you can't make it for yourself this cheap." If you wanted to make a couple, Campmor sells similar waterproof canvas by the yard. Also here is a fancier version with pockets and patterns costing almost 10x more.
Made in: USA