Been tempted to do a kit build in one of those for some time. Another trick is one of those "6v lantern battery" single-emitter floating $4 flashlights, modded with an AAx4 carrier packing Energizer Ultimate Lithium. This leaves oceans of room in the flashlight for an over-the-top kit and it looks stealth from the outside, nobody will know it's a kit. Slip your belt through the handle of the light.
They won't want to steal your crappy flashlight.
that survival knife is a neat idea. Better than the razor blade that most tape to the inside cover of an altoids tin.
I like it so much, I don't keep it in the tin as I seal the tin with electrical tape for waterproofing. I keep it in my back pocket between credit and debit card (for finding civilization) in the envelope with a fresnel lens. My altoids can is a "backup kit" for shirt pocket carry, no intention to be in and out of it all day.
Button compass, matchbox crank light, mini-bic (and I know the improvised spark light trick,) dryer lint, aluminum foil, nylon cord, sewing needle and thread, fish hooks, couple birthday cake candles.
I also sport a "survival necklace" based off of the Esee survival necklace (with snare stuff.)
My pack is a Thor hydration day pack. If I need low-weight high bulk extra storage space, I sport a tyvek backpack on front of the body, (hydration pack) water weight on the back. I like the tyvek Frogg Toggs as a layer in cold, also it's light rain gear (breathable.) I also like a camo poncho for day wear or making a lean-to.
..and contractor grade trashbags. Make a makeshift sink, gear raft, sink meat in a cold stream (Wilderness Refrigerator.)