Buy.com has the Microsoft 39300 Computer Backpack for $25 after $20 rebate (expires 7/31) w/ free shipping.
The Microsoft 39300 Computer Backpack features: 1680D polyester fabric with trendy orange accents. Fits computers up to 15.4″.
CircuitCity.com has the Microsoft Wireless Laptop Mouse for $20 after $13 instant discount w/ free shipping on $24
The Microsoft Wireless Laptop Mouse features: Snap-in receiver, Optical tracking, For right or left hands, Travel-sized.
The Microsoft Wireless 3.0 Keyboard and Optical Mouse are available at Shop4Tech.com for only .99. Enter 12% off coupon code MW12 (expires 5/26) to drop the price to .79. Shipping is free and there is no sales tax (except CA).
Source: BradsDeals: Most Popular Deals
Newegg.com has the Microsoft B2J-00001 Optical Notebook Optical Mouse 3000 for $10 after $10 instant discount + $6 shipping.
The Microsoft B2J-00001 Optical Notebook Mouse 3000 features: side to side scroll side to side, one-touch access, ergonomic Design, rubber side grips and finger grooves. USB Wired
Buy.com has the Microsoft Zune Travel Kit - Multimedia Player Kit for $20 + $7 shipping.
The Microsoft 9DY-00001 Zune Travel Kit - Multimedia Player Kit features: 8.0-megapixel, Optical image stabilizer, Face detection, 2.5″ LCD screen, 10x optical zoom, 16MB SD memory card.
New customers of Google Checkout may receive a better deal by taking an additional $10 discount by paying with Google Checkout (may end at any time)
 
Source: Cheap Stingy Bargains
