Lego. Children's Toys for Adults?

A report in the press that Lego sets are now being targeted by thieves reminded me of our early days of caravanning, with our two children.

We never went anywhere without two large tool boxes full of the stuff which was so useful on wet days. However, when the children were in bed, out came the Lego again and the adults had the chance to play with it. My favourite was trying to build the highest tower before it fell over.

Which of your children's toys do you (did you) like best?