How do you make a homemade musical instrument? (at least 2).

It's hard to make professional musical instruments, so I don't know which category you fall into, professional or non-professional, but let's put you in the latter category for now.

Simply put: simple "musical instruments" can be made at home, anywhere. This is in addition to your own to have a good sense of music, have some general knowledge of music theory, followed by the hands-on ability, and perseverance. You should know that DIY is also a kind of fun.

Prepare one or two dozen cleaned empty glass beer bottles (the best thing is to make a rack that can fix a number of bottles lying diagonally on the bottom of the bottle, the bottle in the middle of the empty sound crisp) or small white porcelain rice bowls, bottles / bowls filled with tap water of different heights, and then use chopsticks head by head to knock, so that the bottles / bowls to make a sound, the use of the calibrator to record and determine the scale of the bottles / bowls.