How to use one keyboard, mouse and display for two PC's?

hey guys, right now i'm using a mac mini and also another Windows PC tower. whenever i want to switch between them i need to re-plug in my headphones/keyboard/mouse/display and this is getting annoying. i've been using a usb hub for the mouse and keyboard so it's not as difficult to setup. is there anything out there that'll allow me to switch between them more easily?

what are my options?

thank you