EverydaySource cuts 25% off all computer and tablet accessories via coupon code "MES05APC2012". That's one of the best percent-off coupons we've seen from EverydaySource in recent months. (We saw the same discount during Black Friday week, but it required a $10 minimum purchase.) This coupon is not valid on sale items. Shipping starts at $2.99.

A best bet is the Matias Folding Full-Size USB Keyboard, model no. Y01-7051-FDKB, for $47.24 after the above coupon. With $10.39 for shipping, that's the lowest total price we could find by $3. It folds in half to fit in a laptop case.