In the shape of a grenade it has to be said!
The BBC reports
Hundreds of people were evacuated from Birmingham New Street Station after a security alert that turned out to be caused by a cannabis grinder.
All services in and out of the station were suspended after reports of a suspicious package at about 15:00 GMT.
Experts discovered the item, found on a platform, was actually a cannabis grinder in the shape of a grenade.
Commuters were allowed back in at about 16:40, but disruption is expected to last until the end of the day.
“The item has now been assessed by specialist officers and is no longer being treated as suspicious,” British Transport Police said.
Birmingham New Street is the busiest station outside of London and the security alert saw commuters turned away, while others were left stuck on trains outside the station.