What has been your least favorite or useless baby product? Of course I'm sure we all have difference in opinions on this. Heres mine:
shopping cart cover (used a few times and than never again.)
wipe warmer (used once and never again-took up to much space, wipes dried out and it was inconvenient because it needed to be plugged in)
bottle warmer (mine was unpredictable and would overheat everytime, so I just went with hot water in a glass)
boppy (I BF for only 3 months, but I never really became addicted to the boppy. I always thought it was more in the way for me, especially when I did "football" hold instead of cradling.)
Dr browns bottles (way too many parts for me. Switched to playtex dropins and never looked back. way more convenient!)
Re: least fave baby product
I agree with the shopping cart cover. I did the same thing- used it a few times and then didn't ever again. Maybe when winter rolls back around I will use it again.
Bassinet- Lena hated it, and screamed like we were stabbing her every time we put her in it. Hopefully if we have a second LO, they will like it more because it is taking up a ton of space in our spare room.
Straw sippys- Lena never got the hang of them. So many people recommended them to me that I bought a bunch, but she just cannot use them. Again, maybe somewhere down the road another LO will!
I cannot think of much else- I think we got pretty lucky in the baby gear department, she used most of the stuff!
Straw cups are like an 18-22month milestone. So, she may still use them. Some July babies are just straw cup over achievers. LOL!
We'll miss you sweet Debbie Girl (4.21.12) and sweet Cindy Girl (8.9.12)

This is good to know, I will keep them around, thanks!
I had no idea straw cups were for older babies. Gah. I'm so misinformed. No wonder daycare keeps telling us to bring in sippy cups. (They're all the same to DH, so he thinks he's following their directions, haha!) They finally SHOWED him a SIPPY cup yesterday. OH, he said.
I am not a fan of the plastic thing that goes in the tub to corral the bath toys. It keeps falling (loses suction) and the dog barks, waking the baby. We finally used the adhesive backing (didn't want to commit right away!) and it STILL fell off. It went into the recycling bin last week.
I do not like bum cream. Why have they not found a way to apply it that doesn't involve my finger? I have seen CJ's BUTTer come in a stick (like a gluestick) but I feel like that would be unsanitary?).
Those screens for your car windows that are supposed to block the sun. I don't know if it's the longitude and latitude of where I am driving....but the sun is always where the shade is not. Fail.
Boppy...DH liked it for holding her when she was teenie, but I felt like it had too much padding in the middle and not enough on the ends. I ended up using throw pillows instead.
Bumbo...she wouldn't sit in it for more than a few seconds. Luckily we got ours for free, left over from our neighbor's girls.