WARNING: SPOILERS
Don't read these if you want to figure out what these items do on your own. This is from my own findings, and I am posting them here for my own memory and because I want to share. If you want to comment your own findings, please name the item and put only the item's description in spoilers; this way readers can choose an individual item they want to see.

Chemlight: A long-lasting torch that cannot be refilled.

Chromatic Illustrator: Functions like a Box of Crayons without the 3D Nanocrayon effect and can reveal Sultan lore when sprayed.

Fu Wraps: Aside from the +1 Willpower and +1 DV when worn on the arm (still needs to be averaged across arm body parts), it gives an extra melee attack. No idea what the exact percent chance is or what it's calculated off of.

Sap Proboscis: Heals 100% damage on hit and acquires blood. This can be useful for getting blood for Biodynamic Powercells.

Sports Cap: +1 DV and +1 Agility