Kids are crafty, natural tinkerers. Now they can join a community of like-minded other youths in sharing their creations, taking on new projects, and acquiring new skills at DIY.org. All sorts of ...

Used to be, if your kid crayoned a portrait of the family dog, you slapped it on the refrigerator for all to see (“all” being, well, the rest of the household). But such small-time exhibition space ...