Combining two tools into one not only lessens your pocket load, it also improves the overall functionality of your everyday carry. A perfect way to accomplish this is with the Kootek K1 Tactical Flashlight Knife.
Not merely a novelty item, this tactical light sports a CREE LED that delivers an impressive 800 lumens of adjustable light output on high mode, while an integrated survival blade and window punch provide cutting, glass-breaking, and self defense duties. Additional features include an IP65 waterproof housing, a built-in, USB-rechargeable 3,300mAh battery, and an anti-slip checkered grip. – $20