Changes to Logwall construction, log&sod roof recipe. 

Log Wall: can use twice as many 2x4s (made from chopped up logs) instead of only heavy sticks
Log & Sod Roof: 2x time of regular roof, hammer&shovel, 2 logs, 4 heavy sticksor 8 2x4s. (and presumably a lot of sod/dirt) 
Stone fireplace requires a shovel and hammer, along with 40 rocks. Essentially a t_woodstove but can be built with foraged materials.