How to get free wood

Today Brother and Grandpa were as usual on a mission. How to get free wood for the cellspace treehouse. Yesterday they did all the measurements. The ony thing they missed was the wood. Okey brother and grandpa scouted the terrain in the neighborhood of cellspace homebase. A biological farmer but also carpenter donated the three 6 meter wooden shelves. Okey, the foundation of the first treehouse was in the pocket for 50 euro's. We went to another place that brother knew. A very agressive guy approachedus but grandpa and brother are not afraid of nobody so they told him the treehouse story. The man got friendly in an instant and donated us an enormous heap of wood. We need to pick it up ourselfs but so what.