It was getting complicated to put our 1 year old girl in her crib, she was crying a lot. So we read about montessori and various other alternatives and i decided to build her a simple low bed frame.
I started with an existing mattress and slatted base. They are 120cm x 60cm. I build the bed around them.
She loved it right away. She did fell from it a few times but we had cushions on the floor. Now, at night, we sit her on the bed. She lies down by herself and she stays in the bed. No more crying.