Hi, Jonathan,

I'd suggest taking a look into this blogpost. It looks like a good approach. Similar goes for any kind of sliders/accordions/carousels...

Generally, you'd have a content area with a page or block per slide. Then you'd render the content area properly and voila, here goes an accordion ;)

Hope this helps,

Marija

I agree with Marija. 

If you have the accordion as a block also, it's worth considering using a link collection to hold the slides instead. You get the full drag n drop support now with Episerver 9 and you don't need to have blocks in blocks that might be a bit too much for some editors. I personally prefer to have only a single layer of blocks from an editor perspective. A matter of taste really...