Better Lily Pads
This is a very simple mod that makes lily pads smarter, allowing any blocks to be placed on them
How does this work? Very simple, every time you click on a lily pad with an item that can be placed the lily pad will move to the water block below, turning into a waterlogged block. If the block above is removed it will turn back to its vanilla state. Note that this can only happen if the block below it is a water block
That's it, enjoy this little mod :D