Hay Bale Blocks are not a new idea. People have been wanting them for a long time, to make thatched roofs and decorate farmland and whatnot.
But what if they had a functional purpose too? I suggest that animals be drawn to hale bales, eat them (destroying the block) and enter love mode. This would provide a way of automatically breeding animals by having a piston push out a hay bale block. You could also make walls and floors that animals would destroy over time for you, which might have some interesting purposes.
As a crafting recipe, you'd create them by combining 9 wheat, and you could reverse craft them back into wheat if you like.
But what if they had a functional purpose too? I suggest that animals be drawn to hale bales, eat them (destroying the block) and enter love mode. This would provide a way of automatically breeding animals by having a piston push out a hay bale block. You could also make walls and floors that animals would destroy over time for you, which might have some interesting purposes.
As a crafting recipe, you'd create them by combining 9 wheat, and you could reverse craft them back into wheat if you like.
I think a 9 wheat block for 9 feedings would work.