[CES 2011] So the iPad is a great Etch-A-Sketch device, you say? Well, how about something that drinks a whole lot less juice (using just one button cell battery that is good for up to 50,000 erases), and is lightweight and portable enough to tote around with you anywhere? That is the beauty of the Boogie Board LCD Writing Tablet, where it uses a thin LCD film as well as a button that will erase everything when pressed in the blink of an eye. Perfect to stick to your fridge door or hang somewhere in the kitchen as an eco-friendly way to remind mom that there is no more food in the fridge, or little Johnny has soccer practice later that afternoon. Already available via major retail channels in the US, the Boogie Board is going for $39.95 each. Kids will surely love this, and you need not feel guilty either since there aren’t too many trees chopped down compared to drawing on paper that is thrown away later.