Stack firewood in a concrete block & 2x4 frame. Youngest player makes frame, adds a piece of firewood & hands any other piece of firewood to the next player.

Play moves clockwise. Next player places the piece they were given on the stack and hands another split log to the next player. Play continues until the stack falls down.

Forget what would make the stack efficient! Place logs sideways, diagonally - whatever you can place safely, but would make the next player’s task difficult. 

Printing suggestions: Since this game is meant to encourage unbalancing? Print the concrete block and 2x4s at about 15% infill, and the logs at a really high infill rate so they are heavy. For best visual effect, use one color brown for 2x4s & another for logs. Use a marker to add the “bark” on the outside of the logs.