Any suggestions?
If you want it done right, you get a sound designer to do that stuff for you. Otherwise, people usually go to sites like http://www.sounddogs.comto purchase royalty free SFX for whatever they need. I personally find sites like that to be outdated in quality, and you've probably already heard those same stock effects a million times throughout the years. There's plenty of modern, high quality commercial libraries available today, but those products are moreso aimed as tools for sound designers to work with like stock images for graphic designers.