Licnoln Logs have been around for as long as I can remember. As a kid, my sister and I used to play with them for hours on end. We used to build lots of things with them. Today, they are still around. My nephew who is 4 years old loves these. He will play with them forever. He likes to build frontiers, forts, and even with his imagination he builds airplanes out of them.
The Original Frontier Set comes with 100 pieces including logs, ladders, roofs, and three or four small men. They are made for ages 3 and up and you can also buy other sets to go with the Frontier set like the Frontier Farm and Frontier Lookout.
If your looking for something that your child can play with and use to develop their imagination skills, I would recommend Lincoln Logs. They have been around since 1916 and are great for children.