Do you know about the diaper sprayer? I'm not exaggerating when I say it will change your life. It's basically a bidet¹ that attaches to your toilet tank. When activated it sprays a high-pressure jet of water that is strong enough to unstick poop from a diaper.
At first I balked at the price, but now I realize it's worth every penny because it makes one of the nastiest parenting chores a lot less gross. You could probably make something identical for half the price, with a trip to the hardware store and a bit of creativity.
Now instead of scraping (ew) or shaking (ugh) poopy diapers into the toilet, or just tossing them into the washing machine and praying that the machine takes care of it (yeah right), we can clean them off before washing. I've tested this on a diaper that's been dirty for 24 hrs (can you believe we don't always have time to take care of dirty diapers right away?) and it still worked.
We bought this one but they mostly all look the same.
Installation was simple, even an 8 year old can do it. I know this because Isaac and Aaron installed it (with a bit of help and supervision). The only tip I have is make sure the rubber washer that comes the sprayer kit looks like the washer in your existing hose. If they're vastly different you won't get a tight fit.
Thank you to Rose for telling me about this wonderful invention.
¹ in fact, the directions in our kit were double-sided. One side said "To install this diaper sprayer...", the other side said "To install this bidet..."