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How can I build a custom sound generator?
(sopuli.xyz)
Make it, Fix it, Renovate it, Rehabilitate it - as long as you’ve done some part of it yourself, share!
Especially for gardening related or specific do-it-yourself projects, see also the Nature and Gardening community. For more creative-minded projects, see also the Creative community.
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Please read the post again; I've edited it.
It sounds like you are looking for something like this: https://www.adafruit.com/product/2210
If you look around the site, there are lots of helpful tutorials to get you started with it and also help you adapt it to your needs. They also sell most of the extra parts you would need. For example you could add this to make it motion triggered. Their parts aren't the cheapest tho, you are paying for the ease of use, excellent documentation, and tutorials. If you're crafty, most of it should be salvageable from e-waste.