The option to decide which material you use to make walls; wood, thatch, leather (for when/if skinning comes along).
A 'door' that can either be an opening/closing door or just a thatch or leather drape that can be walked through.
Thatch or leather rugs for floors. AKA something to drop on top of the 'ceiling' floor tiles to reinforce against any potential rain that may be implemented or just for decoration.
Saving or making new barrels to collect water from any potential rain.
Painting! Green stain could be made from the thatch and red from the beets, so just add a few more colorful things to extract painting/staining materials from and allow basic color mixing so the brown can be broken up with pretty colors. :)