Educational toy made in plastic versions. In the mid-1950s, more explicitly engineering-themed construction toys appeared, including plastic girders, columns, and panels that could be assembled into a model curtain wall skyscraper. Later, this Girder and Panel structural system was extended to a Hydro-Dynamic setup by adding pipes, valves, tanks, nozzles, and pumps to allow construction of model plumbing, HVAC, and chemical engineering systems like a simulated distillation column. Other extensions of the system supported suburban-style housing developments (Build-A-Home), or monorail transportation systems (Skyrail). The building toy Lego was originally developed by Ole Kirk Christiansen in Billund, Denmark, in the 1930s. The name
Lego Design byME Lego Design byME Lego Design byME was a service connected with the construction toy Lego. The service was launched in 2005 under the name "Lego Factory" until changing its name to "Lego Design byME". Using this service, people could design their own Lego models using a computer program, then upload them to the Lego website, design their own box design, and order them for actual delivery. The brand also covers a small selection of products that have been designed by Lego fans, and which were available to purchase as a set. Lego Design byME was created for people to build