Lego

I was Lego kid.  Still am, actually.  I have a gazillion pieces, and am adding more to my collection every month or two. 

Most of my creations tend to be mechanical: they DO something.

For example: an attempt at a Great Ball Contraption module.  And a robotic dog. 

And the first phase of a card sorter.

Another phase of a Lego Card Sorter (now called Deck Recorder) Deck Recorder.

Here are some Claws and Grabbers: