It's a shame that 3D Cafe has their free stuff area under construction because they had a huge selection of 3D musical instruments, including many of what you are looking for in this thread.

You can try sending them an email and ask how long it will be until their free stuff is back online. It's been months already and I keep hoping it will be soon, but another month passes and nothing.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi