Currently, I'm thinking I could do it by modifying any of the following cyberware:
A: Drug Store. Torso/Arm/Leg upgrade slot. No entry in my book, but it's 1 or 2 versions old. I'm guessing the idea is to store useful drugs for immediate use, but what if there was a secret cache of deadly drugs, to be released by remote control?
B: Hiden Holster. Arm/Leg upgrade slot. Instead of outfitting it to hold a gun, you fill it with explosives or drugs.
C: Independent Air Supply. Arm/Leg upgrade slot. Instead of oxygen, you fill it with poisonous gas.
D: Storage Space. An option for any body part; size dependent upon body part. The most straightforward way to pack a bomb inside a person, it would seem.
All of these will require an explosive element and a remote triggering element. What does everyone recommend?