Cracked has a great article posting the worst 20 baby products ever invented. You can see the entire list here but these are a few of my favs:
**MANUAL SNOT SUCKER
Just the idea made me puke in my mouth a little bit.
**PO-KNEE
You just know every creepy uncle and local pervert thanked the heavens above for this pervtastic item
**3rd Arm
Childhood obesity? Bitch, please!