I DO have duct tape. The camo kind. Little flat "rolls" of it.
I keep a pack in the car and one at the house. The car pack is downloaded a little less than the house pack. I don't know why, I live in the middle of nowhere and could make a stand here.
Typical items in my packs.
Magnesium fire starter block
Assorted knives - at least 3 (sm,med,lg)
EZ Lap diamond "stone"
Water purification tabs
canteen
Ruger Polymer-framed 9mm
5 - 15 Round mags
Assorted Ammo - 125gr +P+ and "snake shot"
assorted first aid stuff
Pepper spray - you don't always want to shoot!
MRE's - just in case you can't find any good grubs, bugs, or snakes to eat.
Trip wire flares (perimeter protection!)
smoke grenades (real ones)
Arial flares
A medium sized hammock (for the kids to sleep in, to hoist food stuffs off the ground, or to use as a net)
Extra sewing needles (besides the suture kits in the first aid bag)
small pistol cleaning kit and lubricant
toilet paper (roll removed and smashed flat)
compass
big clip-on cyalume sticks (coast guard issue?) Clipped to the packs - extras inside packs.
socks (2 pair)
gloves (leather and warm)
drag harness / carabeaners (can be used for rapelling)
100ft roll of line
6 - 30 round AR-15 mags (home pack)
Machete (home pack)
wool blanket
quilted nylon ground cover (thin, light)
2 or 3 silver "space blankets"
trioxane bars
waterproof matches (the kids can't use the magnesium bar very well)
Storm whistle - loud sucker!
strobe beacon light
extra D cell battery for strobe
nylon wire ties
field guide card of edible plants (hey, I don't know everything!)
small bottle of citronella oil (safer than DEET, but not as effective)
medications (Immodium, sudaphed, benadryl, tylenol with codeine, ibuprofen, lots of others)
hand sanitizer (gelled alcohol)
bar soap
pic of the wife and kids (in case we are separated)
Instead of thread, fishing line, and snare wire, I use 40 or 60 lb test SpiderWire. (The original braided stuff.) You can do everything with that stuff and it's already a nice OD Green color.. A cousin of mine used some 200lb test HEAVY DUTY stuff he bought at a sporting good store's going out of business sale and made a bow with it. (Actually killed a rabbit with it!)
All the item really don't weigh that much. (Except the Ar-15 mags!) Looking back on the list I can't believe how much it looks like, but I left a good 1/3 of it off.