I too love my change table and my monitor. we have to keep the doors all shut as we have a cat that chews..... so a monitor is a must in this house.
And the change table is a godsend. I hate dressing her on the floor as it hurts my back.
We borrowed our baby bath and rocker, so I dont feel like I wasted money on them, but they didn't get much use.
Most useless items would be booties (especially for an early walker on tiled floors!!!) top sheets - we use a sleeping bag and dresses smaller than a 1. Jenna didn't get much use at all out of these as she was crawling in a 00, and starting to walk in an 00-0, so dresses are just dangerous when they are crawling.