We are Lego and FischerTechnik, two of the most advanced toy model construction systems ever made. You formerly privileged kids loved to make stuff out of us and throw parts of us at your siblings.
From the Lego web site:
The name LEGO comes from the Danish words "Leg Godt", which means "Play well". In Latin it means "I put together".
From a FischerTechnik distributor website:
Fischertechnik parts are made with incredible precision, so that models fit together well and are sturdy. This allows complex models with intricate moving parts to be built. Engineers have used it for modeling manufacturing processes.
The sets range from beginning builds for as young as age five, to computerized robots that interface with PC's or Macs.