The Lego Mini Figures: kids love them, but they're a nightmare for parents or anyone who gives them to a kid as a gift.
Nothing's worse than spending $4 or so on one of these only to have the kid open it and learn it's one of the figures they already have.
I talked to someone today who had this problem. Her son wanted a very specific mini-figure for his birthday, but trying to figure out exactly what was in that package without buying it and opening it up was next to impossible.
Until now. Here's a way to know what's in the package before opening it! For series 1 & 2, it's a barcode tracker. For series 3 & 4, it's a dot decoder. Here's the links you'll need to insure you never end up shelling out $4 for a duplicate again...
Series 1 barcode trackerSeries 2 barcode trackerSeries 3 dot decoderSeries 4 dot decoder