We actually saw one example of a powder flask in our last post:
Indian made Powder Flask. Click on image to enlarge. Public domain image.
The above flask is from India and is made of ivory, with some brass and amber fittings. This flask dates to India's Mughal period. These flasks tended to have fine carvings of animals and hunting scenes, such as the two examples below:
Click on images to enlarge, Public domain images.
The above images show two more Indian powder flasks, made of ivory with brass and amber fittings. Pressing on the brass handle opens the mouth of the carved animal figure and dispenses some powder.
In Europe and America, powder flasks tended to be made of copper, tin or brass, such as the examples below:
Flasks made of brass, tin and copper. Click on images to enlarge
As can be seen by the images above, such flasks were commonly decorated with carved hunting scenes or pretty patterns. Some powder flasks were even made of lacquered wood, coconut shells, bone, leather etc.