Upgrade your ipod if you have an old one, or don't have one.
Blu-rays, blu-ray player
If your store is an Apple Best Buy, magic trackpad, mouse, or keyboard
Apple TV, I love mine and watch it more than blu-rays or cable
Sony Dash
ipod speakers
There's an LG 1080p 32" for 349.99 at the moment, 150 would take a nice chunk off of that
Or, just keep it and wait for something you would buy anyway