I need to find a way to make an existing block (sand, in this case) drop a custom item.
Can this be done without editing the core class?
Everything I've found on this involves creating a new block (there seems to be more focus on dropping items with custom blocks and less focus on making existing blocks drop items). Problem is, I really, really need it to be Sand. If it can't be done, then I'll find another way to get the item in the game, it just won't be from a block drop.