Newegg offers the Microsoft Sidewinder X4 Keyboard, model no. JQD-00001, for $29.99 with free shipping. That's $10 below our July mention and the lowest total price we could find by $16. It features anti-ghosting capability, automatic profile switching, and programmable macro keys.
TigerDirect offers the Microsoft Xbox 360 Wireless Controller for Windows, model no. JR9-00011, for $29.99 plus around $4 for shipping. That's the lowest total price we could find by $11, although we saw it for $4 less earlier today (now expired). This PC gaming controller has a 30-foot wireless range.