If you want to perform a little initiative to your children you may select wood Pallet tree house project for children. Wood pallets for children are very completely happy if you make a DIY Pallet tree house.
Looking at this Lego art, I think that this might be something I could actually make. I will need to dig through some boxes and find my Lego first and then see if I have enough red and white. I ain’t ‘fraid of no Lego ghosts!