So something me and Emperormeznikjr were thinking in sky block was making a shop to sell things we have leftover, such as cobble, cactus, paper, things you'd need for challenges or building your is, things that would be cheaper than whats in /warp sbshop. However, when we were coming up with this idea, I thought to myself, "There aren't really any shops out there in sky block that I know off." The only real shop that there is is /warp sbshop which for first, doesn't sell a lot, and most things are way over priced. Looking at the recent amount of players joining in, a few of these players we've seen join sky block, and somethings when me and emperor aren't online. And I think shops like these on islands would be beneficial. However, we can't always do /w or advertise in chat, and some of those who join in recently don't know how to ask for stuff. So I think advertisement holos, like those we had in 2015 spawn, would be great for those looking to buy something in sky block. It'd also be great for those who play sky block currently, such as Istas who looks to buy flint, gravel, or arrows here and there, yet most people don't have them to sell or don't see his post.