anyone make piezo instruments like smallmetal kick drums, etc?

i have been getting into this and need some better tricks like placing disc piezos between thing wood into a metal tin for a lower sounds....

 

What can't be done ? Needing a true heart-beat , you know where to glue it .
I make drums .

 

Well i have a multitude of piezos - some from guitars and cheap, others too expensive like fischer - i wonder if a guitar piezo would sound good. I only have two enclosures, but i also have cyllindrical and disc of various metals and sizes - what would you recommend trying? also can you solder many disn piezos into the same enclosure for some added benefit???

 

The piezos I've used are sold as audio speakers , flat , about 3in. diameter . They can work well as a microphone for recording , such as
when one is glued to a banjo head . Should multiple mic's be employed - then likely they will be EQ'ed differently and very distinctly so .