Top 10 bricks missing from the Lego Architecture Studio - Tom Alphin
Missing LEGO Bricks or Instructions? Here's How to Get Free Replacements
I've had the very rare missing piece before, but have never received a piece that (according to the parts list) isn't even in the set! Bag 2 in the new Space Shuttle
Sort it out #3: how to identify missing LEGO bricks - YouTube
Missing 1 of 6 bags to a set, how can I identify what parts are missing - Bricks