Plans needed childs play house

I need some assistance, I have DAGS and came up with nothing worthwhile so I
am asking for the groups help. I would like to build a off the ground play
house with attached swing (single). I thought about just buying a prefab but
6 bills is way too much money. What I would like is something that is about
4 ft off the ground and about 6x6x5 with an A frame roof. I would also like
to come off the one side with wood for a swing or two.

Any Ideas?
TIA

RIch