A bit unusual, but here is a review of a single part. I don't have any pictures so if you haven't seen it in person I recommend a quick look at it over on PlaymoDB.
30 29 3710 - Clip with loopYou will notice that it is a new part, only available in the Egyptian series set
4246 Tomb with Treasure.
It's purpose is to clip onto the bucket handle so that the bucket can hang directly down without swaying to the side. Brilliant. A hook has been used in the past sometimes for a similar purpose but it tends to slide and not be really effective at spreading the load. A key point here is that the fact that it clips onto the bucket handle, meaning it is the same size as a Klicky hand. So it should easily fit any object that is sized to be held by Klickies.
This part has great potential for use in customization work. It would be much faster and sturdier than tying with the rope directly, and will properly distribute weight so items can hang directly down.
I was thinking it might have real use for the Rescue theme fans, and also in Adventure or Knight battle settings. I haven't tried ordering it from DS yet, but my recent experience with US DS is that most Egyptian series items are not currently in stock there.
Conclusion: It's a great new functional part, nicely designed, and with lots of future potential.