Childrens’ technology maven and playful tinkerer Scott Traylor came up with this whimsical mod for used movie theatre 3d glasses. With his simple PDF template everyone can go green in more ways than one. From his site:

I’ve had the idea to create froggy spectacles for a couple of years now. Whenever I have a creative idea, I try to capture it in my “Idea Book.” I’ve been keeping an idea book for a long time, and I encourage others, especially young children, to keep an idea book too. Going on a long family trip? Bring along your idea book! Kids want to play another 15 minutes of video games? Okay, after you have come up with three new ideas to put in your idea book. It’s a lot of fun to look back on ideas you have sketched out. Sometime, long after you have captured your idea, you might realize you have the materials laying around to make your idea a reality!