What I have been working on is getting the inside ceiling painted and building a loft for our youngest.
It is really just a bunk but in selling it to my daughter I sold it as a loft so it will now and forever be known as the loft.
What I did was use 1/8 inch 2X2 angle to build the frame then secured it with grade 8 bolts to the frame.
The frame turned out really great and I will use some 3/4 plywood to complete the loft, yes the loft.