The shelves are two Trofast systems from IKEA: http://www.ikea.com/us/en/catalog/categories/departments/childrens_ikea/
This post is sponsored by Lego Friends Lego would have to be the most used toy in our home, so much so that a few years ago we made my son a Lego Storage Unit in his bedroom dedicated to displaying his creations!
Covering the Drona boxes so they go better with the rest of the room - maybe use the curtain fabric?
grey and yellow chevron baskets--looks like the same fabric @Ginine Ledbetter??
BENTLEY GARDEN WOODEN OUTDOOR TRIPLE WHEELIE BIN STORAGE SHED CUPBOARD UNIT
Under Stairs storage maybe something along these lines for toys
Living room storage
childrens storage | Playroom toy storage : Design - UKworkshop.co.uk
THE PRIMARY COLOR STORAGE DOESN'T LOOK AS COOL AS IT COULD