Drums can be difficult to make because it can be hard to stretch the membrane (drum head) tight enough. Typically around the world people make their drums by using animal skin which tends to tighten as it dries.
Luckily our industrial world provides us with a perfect alternative material to use - balloons! (You can also use surgical gloves if you happen to live near a surgical supply store...)
WARNING - Don’t build this instrument if you have latex allergies!
MUSICAL INSTRUMENT BUILDING - THE PROCEDURE!
When playing the tube drums, don’t close off the bottom by putting them on a flat surface, but rather, hold them between your legs for better sound. Lightly tap on the balloons with your fingers (don’t use a pencil or stick). For a louder sound you can pinch a bit of balloon and pluck it.