Most gear can't really keep up with the "changing pace and mood of each day", unless you're rocking Heelys, and your normal pace oscillates between three and seven mph. For versatile transforming bags promising to do just that: Bodykit.
From a crew of British satchel-hatchers who'd previously stitched for the Queen's military, Bodykit's a line of mutating carry-alls which can each be worn "relaxed" (all dangly) or "dynamic" (snugger fitting), and're weather-proofed outside by polyurethane, and mesh-lined inside by "Polyester 3D", also an upcoming '70s dance movie where the groin thrusts feel like they're coming right at you! Smaller bags include the portrait-oriented Bodybank and landscape Bodyloop, both of which can be worn "low across the shoulder or at the hip", holster-style, and come in "carbon black", "cardinal red", or "cobalt blue", which's also what you call a guy walking home alone on 17th. For larger lugging, they've got the Bodyback which switches between a messenger and a backpack, the "dual aspect opening" Bodyspin worn landscape or portrait itself, and a low-slung or high-across-the-back, "high capacity" 20" x 13" x 3" joint called the Bodybag, which's absolutely useless for transporting Ralph Macchio due to his mastery of the crane kick, and the fact that he's marginally taller than 20''.
The bag de resistance's the Bodygrip, which starts as a standard relaxed messenger, but awesomely transforms to a snug frontal body fit that looks like a bulletproof vest -- though anytime your day necessitates one of those, your pace probably isn't nearly fast enough.