As one of its daily deals, Amazon offers the Logitech K750 Wireless Solar Keyboard for Mac in Silver, model no. 920-003472, for $39.99 with free shipping. That's tied with our February mention of a different color and the lowest total price we could find by $10. (We saw a refurb for $27 shipped in April.) This wireless keyboard is powered by light and measures only 1/3" thick. Deal ends today.

Orders placed today are guaranteed to arrive in time for Christmas.