We tease Kaira that for math and handwriting (two subjects that must be done at the table) we might resort to duct tape to keep her in her chair.
Fortunately for her, not all her work is true seat-work. Supplemental reading for our history studies can be done wherever she chooses. “Where she chooses” is usually half in–and half out–of bed. As her bed is the top of a triple high bunk-bed, this ends up being an interesting position.
Really, we do have comfy chairs in the livingroom, love seats in the study, and even a little child-sized rocker in the girl’s room. For that matter she’d be welcome to get entirely up on the bed.