If you would like to have a foamy, cushiony mattress headboard, it’s possible to have one with a DIY board like this from Ikea.

This type of headboard is best used with a wooden base spring mattress or a mattress base. It is made of a solid fiberboard and the padding is filled with polyester wadding and polyurethane foam then covered in 100% cotton with polyester lining.

Via Ikea