I know this has been suggested before, but I couldn't seem to find the topic to bump so yeah. I suggest craftable frag mine and bear traps. They obviously cannot be placed in protected towns (similar code to lockers), but can be in unprotected towns for Town Control or PvP. Also, place-able in bases and tents/shacks. This would add a fun twist to all types of PvP. Like I said, this is a bump.
And while I am at it, why not suggest booby trapped lockers and containers.