The Crochet Box Stitch really comes into its own when worked in rows of graduating colors, or in alternating colors. From baby blankets to Ponchos, Afghans, and pillowcases, there's not much you cannot create using crochet box stitches.
Basement bathroom door for cleaning supplies. Kitchen to basement door for pantry items. Back of girls' door for barbies. Inside girls' closet for shoes. Inside my closet door for belts and scarves. Entry door for shoes, mittens, etc.
Staircases take up a lot of space, so why not use them for storage as well. Imagine each step is a box with a hidden drawer in it still allowing for additional storage or home office space beneath the staircase.