

Yes,
https://www.silverstonetek.com/en/product/info/expansion-cards/ECS07/ https://www.amazon.com/Adapter-RIITOP-Expansion-Chipset-ASM1166/dp/B0D8BCWHPT
https://www.aliexpress.com/item/1005003335714128.html
Then you have 4 main plus these 5-6 extra. Just put your boot drive on a data drive instead of m.2 or get an adaptor and you are good to go. 8 data drives plus a boot drive
https://bookshop.org/ (formerly https://www.indiebound.org/ebooks I think) donates a percentage to a local bookstore (of your choosing iirc, haven’t bought or even torrented a book in a while).
They don’t have everything, but a lot.
Kobo for other things.