The Irish Shillelagh - weaponry disguised as a walking stick.

https://www.youtube.com/watch?v=KecmCFBrslk

What is a Shillelagh?

Throughout history there have been many styles of stick which have been referred to as a Shillelagh. The earliest known reference dates back over a millennium ago. These sticks were a club which became associated with the people who used them extensively for warfare and personal protection.

Later during the periods of Celtic migrations & English plantations the previous inhabitants of Ireland who were not assimilated into settlements were increasingly pushed back into mountainous and forested areas. Due to Penal laws outlawing the use of these weapons a new style of Shillelagh began to emerge. These were longer than a typical club and were used as faux-walking sticks.