Baby Consumerism Day

Because there is rarely a legitimate situation where you can say "As a mother..." or "As a father..." without sounding douchey, I am opening up the floor today to all URI! Zone readers who are farther along the progeny track than we are.

What should we buy that is indispensable? What seems useful but never gets used? What should we avoid?

The general rule of thumb I've learned so far is to avoid anything that only has 1 advertised purpose, and fill those needs through multi-purpose items and/or leftover Amazon Prime boxes. Enlighten me further!