We build LEGO Tropical Aquarium, a set that gives any room a big decorative piece that you don't have to clean.

Maybe you didn’t want your kid to play with toy guns or toy soldiers, so you gave him some wholesome, creative Lego bricks. Which works until he uses the interlocking plastic pieces to make a tank.

Back in the 20th century, Lego Technic was a popular toy designed to teach kids about mechanical technology, and be a lot of fun to boot. Motors and pneumatics were available, but by and large you had ...