Christmas comes but once a year, and here's one final--last-minute, if you will--Christmas roundup. You can do everything here in the next day or two. A holiday M&M tasting is a fun activity to do with kids--can you tell red from green? (via Make and Takes). ... As a super-last-minute gift, Holidash suggests charitable gifts: "Charitable gifts might have been a little less cool in the blissful world we lived in last Christmas, but this year the economic crunch seems to have made everyone a little more aware. Sure, your mother might prefer a cashmere sweater from her favorite child, but if that money can be spent feeding an entire village with a Water Buffalo from the Heifer project, how can she protest? And your pops might think he wants that set of power tools with all the fancy adjustments you don't understand, but wouldn't he rather help a budding entrepreneur in a third world country with a loan with Kiva?" Or check out these no-shipping-required gifts from Bargainist.

If you haven't yet wrapped your presents, check out these eco-friendly wrapping tips from Earth911.com in mind...Learn surprising facts about Santa : "Did Coca-Cola invent the image of the modern-day Santa Claus--a white haired man in red clothes who delivers holiday gifts to kids? Not exactly. But they popularized Santa and ingrained into our mindsets that very image" (via Musings on Technology, PR, Politics and Spirit)...And finally, when Christmas Eve comes, track Santa on Twitter: "The account is being maintained by 'Bitz the Twittering Elf,' and compliments NORAD's official site--Noradsanta.org--which includes options to track Santa in 3D in Google Earth, a countdown, and an interactive North pole" (via Mashable). NORAD is the North American Aerospace Defense Command, explains Bloggers Blog, so you know it will track Santa's whereabouts quite scientifically. Or check here for a list of the 10 Best Santa Blogs of 2008 (yes, he has many). Happy Holidays!