The worst of the administration seems to have subsided a little, so I am getting a little more time to reflect on the tools I've used so far.
The less good feature is that they are pretty slow to create (especially if you liven them up with images) and the limited text can be quite restrictive. Yes, you can add blocks of text as an image but it's a faff. While I suppose almost every online quiz is a bit of a pain to create, it's a shame things are just so linear. 10 questions a week is plenty if you need your sanity to hold out over a semester or two.
Padlet, I guess, has similar issues in its inflexible nature, especially when trying to assemble an inter-linking VLE type structure, but I forgive it. Now I have sorted out a common layout for each week's work (slides, individual tasks, group tasks and further reference) it isn't too bad to re-make a padlet and change the content. A home page links to individual weekly pages which, in turn, have pinboards that are open to students to edit.
Last week I asked students to create references individually and post them on the pinboard, then in groups add their top presentation tips. I was staggered by the quality and quantity of responses and it was great to share feedback with everybody (you do have to choose your words carefully though). So now I have a page of reference examples, common errors and presentation advice that is a useful resource for the rest of the module.
There were a couple of students who had difficulty posting: it is possible for students to delete (by accident, I'm sure) or hide other's posts but I didn't rate that as significant. I'm converted, but a good VLE with links to the pinboard element would probably be the better option.