Bottle warmer - useless - 7 mins to warm up was way too long. If you FF try to get your baby to drink room temp fromm the beggining.
Bumbo - mine hated it, bought them new and they got used for all of five minutes.
Sit me up cosy thing from Mothercare - essentially £40 for an inflatable ring. Cushions on the floor work just as well.
Cot top changer - never used it - the floor was easier.
Cot mobiles - expensive, and pointless.
Baby bouncer - crap head support and just shite. Invested in two fiisher price infant to toddler rocking chairs - they were lifesavers.
Moses basket - mine never used them, slept in the cots from the pram duringthe day.
Cotton wool and water - no, straght to wipes, used huggies newborn and never had a problem. They used them in SCBU too.
Top and tail bowl - still havent figured out the point of that one.
Moby wrap - wouldn't tolerate.
Nappy bins were fab, we had one upstairs and one down but we had twins so I guess they were getting emptied more quickly than with a singleton. Certainly never smelt.
Tripp trapps were also worth it for us, with trays. They are still using the chairs now at 4.5.