I use Pant Hangers with the clips to hold my 12.5 inch sqaure.
use plant pots to hold my cutters,thread,pens
use a fishing tackle box for travel projects( 3trays is a must)
use clear fishing tackle trays for buttons,pins,needles etc.
small laundry baskets for fabric storage
use paper towel rolls for shipping blocks
wax,freezer,tissue papers use for patterns