Cut a piece of branch to a 3-5” length, and find a drill bit to bore holes in one of the cut ends.

Bit logs

make your own diy lincoln logs from scrap lumber marble

Use a 3/4-inch dado router bit to cut your notches and use a backing board to prevent blow out. You can go with a traditional look using walnut stain for the logs and red and green paint for the roof pieces, or pick your own colors for a custom design.

Source: https://www.pinterest.com/pin/506443920568601534/