We spent the school holidays dismantling three pallets (and using an entire one) as materials for building this cubby house. Total cost is approximately AU$120 (paint, roofing material, staple gun, screws). It was a great 4 days working with my dad and my 6 and 9 year old boys to build this cubby house that the kids enjoy.
The lower area will eventually have three walls and will be the home of our dog Andreas 
Idea sent by Alex Salvador !