Teach those tykes about saving the earth with this environmentally friendly dollhouse made from natural organic rubber woods and sustainable bamboo, and equipped with fully operational solar panels that power its LED lights. Available from HaPe Toys at The Ultimate Green Store, $450.

Have family members who monopolize the shower while running up your utility bills? Remind them to cut it short with this clever timer. Rotate the hourglass when you step inside the stall, and when all the sand moves to the other side, your time is up—dry off and get out! Available at AM Conservation Group, $2.99.

Want to get softer, smoother laundry while saving energy? These dryer balls reduce ironing, static and creases while cutting drying time by 25%. They’re re-usable, and each one lasts about six months. Available at True Green, $7.99 for two.