A lot of the sound effects I use in my animations are taken from a website called Soundeffect Lab.
It's in japanese but you can translate the text if your browser can do that. It's what I do.
If you can't however, just click a category, listen to every sound (click the blue part of the text) and download the ones you like.
And don't tap on the 2 demos on the main page. Trust me. Just don't.
Sound effects don't include music (no shit)