Takes a bit of thought but quite easy if you’ve done some machine sewing before BUT remember only sew one square gusset on the liner so can turn it inside out through the unsewn gusset (corner) then hand stitch the second one inside.
DIY: gift box with recycled Christmas cards! Any cards really. No matter that the card was signed by someone else. Or if it worked out use the card given to you by the person you are giving the gift t (Diy Gifts)