Are you planning to buy storage boxes?
Why not just make your own with this DIY washable storage box fromSewing Craft DIYon Youtube.
Youre not just saving a lot of money, but you also have a chance to recycle some fabrics.

Image credits: Sewing Craft DIY via Youtube
Watch the video tutorial below and start making your storage box today.
Materials:
Directions:
Step 1
Measure the lining of the inside fabric.
Now, the lining fabric measure 8 1/2 (22.5cm).

The next section will be 8 1/4 (22cm).
The third section is again 8 1/4 (22cm).
The fourth section is 8 1/2 (22.5cm).

Double fold both fabrics on the top, secure it with clips, then and sew all around.
Put the fabrics wrong sides together, then match the seams and the bottoms.
(The lining fabric will be longer on the top.)
Sew in the seam through both fabrics.
You should end up with 4 open sides with 4 corners.
Clip the bottom 3/8 (1cm) over one corner line.
Fix the bottom square to both fabrics at once, with the right sides together.
Sew with 3/8 (1cm) seam allowance.
Sew it until the corner line, then do a zigzag stitch all around.
Slide them one by one to the pockets.
Fold the top over to secure the cardboard.
Just use hot glue to attach the fabric to the cardboard.
The box is now finished!