We're at the start of our campaign (they've just gone though Death House) so I've yet to dig deep into it but I have been taking a close look at both MandyMod and DragnaCarta.
At first I was preparing to follow MandyMod closely with the Fanes and stuff but it ended up getting a bit overwhelming for me and I realised I didn't actually need or want all of it. So I've dialled back a bit and am just taking bits and pieces of inspiration wherever fits. I've liked stuff from both supplements so I'll probably continue to do so, although I have to be careful with MandyMod because there's so much homebrew lore in it that I need to remind myself what is module lore and what is fan lore. Nevertheless, there's a treasure trove of stuff to add which is a really nice change for running a module.
I haven't actually heard of the interactive tome, marvel missed that but I'll have to check it out!