Annoying stuff isn't it, especially if you stand on a piece in your bare feet!
I've often thought of making a card on a Lego theme and my chance came when I was asked to make a card for a friend's son who loves the stuff...
I've created a Lego frame around a die-cut number and greeting. The Lego blocks were fiddly rather than difficult - I've created the 3D effect by using tiny foam pads under the circles.
I've entered this card into the challenges at:
Seize The Birthday - Anything Goes
Come And Get It Challenge - card for a child
Quirky Crafts Challenge - frame it
Thanks for looking