Hi, i would like to suggest adding bathtub. You could reuse (with minor tweak) sofa connection system and make it so players can extend it and for eg turn it into jacuzzi.

If it would take whole block space than it could be used to create small pond in backyard with some nice edges.
Crafting recipe:
5x iron or wood + 1x water bucket

Maybe add option to use iron bathtub with dye in crafting table to change its color.