I always want my tools on the bike even when I ride with panniers. Also, I hate to fill up limited luggage space. 'Tools' includes CruzTools RoadTech B1, Stop N Go Puncture Pilot and Mini Air Compressor, and a Leatherman multitool. It's taken me a while to come up with the on-bike tool storage 'system' but it works great for me. Let me know what you think or if you have suggestions.