LEGO: Black Forest Cuckoo Clock by Nick Tatar ~ "The gears for the cuckoo were a fun challenge and something I'll keep playing with. The barrel on the back right side is the turning mechanism for everything.
We know that in 1914 the Pittock grandchildren played with wooden blocks. In children play with plastic Lego interlocking blocks. I am not sure how many children would prefer to build a grandfather clock instead of a pirate ship or rocket.