WhatIfSulfured
Adds one small tooltip to any block a sulfur cube can absorb: what that block turns into once it's eaten. Wood becomes a rubber ball, TNT becomes living TNT, pumpkins become a golf ball, and so on — twelve different outcomes depending on the block. Hover an item, see what happens to it. That's the whole mod.
Nothing else changes. Fully client-side, so it works on any server, and it stays accurate if new blocks get added to the archetypes over time. More in README.md on Github.