That weird three bladed weapon the assassin grabs to confront West in the yard surrounding the house first appeared in the episode "The Night Of The Torture Chamber". The knife is a "Kpinga", a traditional combat throwing knife from north-central Africa.
Mohammed Bey throws the tambourine to cut the head off the statue. This is a take on the classic scene from the James Bond movie "Goldfinger", where Oddjob throws his bowler hat to decapitate a statue on the grounds of the country club.