No what you really want people is a fake UN crate (you can see where this is going
)
Costs... I dunno, bout $2000 to make, and basically, you can depoy it newhere on the map. It looks like a UN supply crate, but when the enemy goto take their well deserved "prize". It has a nasty little suprise in it:
NUKE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Hope this is a suitable replacment/guider to what you really want.