This is not an exhaustive list of items. The category of an item represents not just the cost but the difficulty associated with getting that item in the game setting.
Ammo (box of 50 rounds)
Knife (simple) - Light Weapon (won't last long)
Duct tape roll
Flashlight
Padlock with keys
Trail rations (1 day)
Hunting knife (Light weapon)
Machete (Medium weapon)
Nightstick (Light weapon)
Leather Jacket (Light Armor)
Backpack
Bag of heavy tools
Bag of light tools
Binoculars (Asset for perception tasks at range)
Bolt cutters
Cell phone
Climbing gear
Crowbar
Electric lantern
First aid kit (Asset for healing tasks)
Handcuffs
Rope (Nylon, 50 feet)
Sleeping bag
Straightjacket
Tent
Hand grenade (Explosive weapon, inflicts 4 points of damage in immediate radius)
Light handgun (Light weapon, short range)
Medium handgun (Medium weapon, long range)
Bow (Medium weapon, long range)
Rifle (Medium weapon, long range)
Shotgun (Heavy weapon, immediate range)
Kevlar vest (Medium armor)
Camera designed to be concealed (Transmits at long range)
Microphone designed to be concealed (Transmits at long range)
Computer
Cold weather camping gear
Nightvision goggles
Scuba gear
Smartphone
Heavy handgun (Heavy weapon, long range)
Assault rifle (Heavy weapon, rapid-fire weapon, long range)
Heavy rifle (Heavy weapon, 300-foot range)
Submachine gun (Medium weapon, rapid-fire weapon, short range)
Lightweight body armor (Medium armor, encumbers as light armor)
Military body armor (Heavy armor)
Disguise kit (Asset for disguise tasks)
Used car (Level 3)
Small boat (Level 3)
Large boat (Level 5)
Luxury car (Level 5)
Sports car (Level 6)