I know the sand shop suggestion has been listed in Trello. It's been a while since it was added there. So I'm suggesting it should just be put to the shop similar to diamonds and other consumables on the skyblock shop where you will trade using cobblestone for an X item. Most people really need sand especially the ones who started on hard difficulty islands. If possible too, add dirt/grass as well. Diana manage to set up the shop easily so I don't really see any reason for it to be difficult.
