So I have this in-law. She knows everything. Just ask her, and she'll tell you everything there is to know about everything. When presented with any question, this particular relative will emphatically tell the asker why her opinion is RIGHT. When I seek out friends to help me edit my dissertation, I won't ask her, largely because she will suddenly develop a deep knowledge of my field and attempt to debate points of methodology with me.
When I registered for gear for the Bug, this particular relative called me to critique roughly half of the baby stuff I had picked out. She has 2 kids, and of course she knew what we needed. She has, in fact, given us a lot of hand-me-downs, and I'm not saying we don't appreciate them, but I'm also a grown person and I would like to make a few decisions on my own for my child. And while I am all about the frugal, one of the advantages of a middle-class existence is that one has the means to get a few frivolous things.
Indeed, there is at least one baby item that DH and I use in part to spite this particular relation.
In light of this, thanks to the anonymous nature of the internet, here is a short list of baby stuff that I have loved so far that she thought were dumb.
1. Our wipe warmer. It is pretty frivolous in its own way... after all, the Bug survives when we are out and about and she has to deal with a room-temperature wipe. But the warmed wipes are particularly nice when she has a diaper rash or when she has woken up in the middle of the night and needs to be changed, as it eases the shock of suddenly being unwrapped down to a naked bum. If you get the right sort and maintain it correctly, it doesn't dry out the wipes.
2. The Boppy Newborn Lounger. This thing was awesome when the Bug was smaller. She was never one for chilling out in mechanical moving things (i.e. bouncy seats or swings), and has always been one for being near people.
We were able to put her on it next to us where ever we were and she could just chill out. I loved this thing, the Bug loved this thing.
3. The nursing cover. I happen to have one by Balboa Baby. We like it, mostly. It is either appropriate or an evil thing of covering my child. I prefer this to the know-it-all relative's approach, which was to nurse her children in public restrooms. I'm sorry, but that's kind of gross, if you ask me.
4. Newborn sized diapers. In these days of 8 and 10lb babies, there are a number of kiddos who never need these. The bug was 6lbs 5oz when she was born. For the first few weeks, the size 1s were just way too big. Sure, the size 1s mostly kept poop off of us, but the newborn ones fit so much better. We didn't need a massive case of them or anything, but they did the job so much better than the size 1s, which the nosey relative assured us were all we would need.