We all love LEGO! Even the adults enjoy playing with their kids with these construction sets. Japanese designer Mokurokku created a wooden construction set which looks like LEGO but is eco-friendly and won’t do any harm to your kid – isn’t that important? The pieces look like LEGO and can be constructed like them into pieces but they are made of birch and maple wood. The price for each set is about $29, it’s not a high price for your kid’s safety and especially for kids who have allergy while your children’s excitement won’t be less than from LEGO.