My pretty neighbour does a bit of child minding, just her friends kids, was having a cuppa with her today, she has 2 X 40L plastic containers full of Lego, but it just does not look like what you build!
And she was as bad as the 5 yr old she's minding, at least I can tell what you've made, got no idea what they were making, might go up and have a look!.......