This is the IRIS LEGO 6-Case Workstation and Storage Unit

There is a smaller version with three drawers.
IRIS LEGO 3-Case Workstation and Storage Tabletop with 1 Base Plate

This is another design called the BOX4BLOX Lego Organizer.

If you don’t have a large enough collection to warrant drawer-type organizers. Here are some options using bins:
LEGO 4-piece Square Stacking Basket Set with Wheels TSB-SQ

or the
Lego 4PC Project Case Set each case of which has dimensions (3.125″H x 13″W x 12.25″D).

This is an interesting possibility: The Container Store LEGO Storage Brick (2×4), which comes in several colors

which also comes in a smaller size
The Container Store LEGO Storage Brick (2×2)

and smaller still…
The Container Store LEGO Storage Brick

and smaller still!
The Container Store LEGO Storage Brick

or you can always revert to the plain white IRIS 6 Drawer Cart

Be sure to check out our older posts on LEGO storage:
Colorful LEGO Storage Ideas
Storing Your LEGO Collection

Plano has come out with a new line of colorful tackle box designs geared for arts and crafts storage. These are the Creative Options
line of Storage Boxes and Organizers. The color scheme is a avocado green base with a purple lid and gold handles. These storage units are excellent for storing small LEGO collections while providing portability.

Here are some of the available models:

Grab N’ Go Rack System with 2 Deep #2-3630’s and 1 #2-3650 -Avocado Base/Purple Lid/Gold Handle

It comes with Two Deep #2-3630’s and One #2-3650 Prolatch Utility Boxes and Bulk Top Storage. It has dimensions: 13.1 x 9.9 x 13.6 inches

Multi-Craft Rack System

This includes three 2-3650 and two 3449 utility boxes and a compartmentalized top access storage on lid and large bulk storage area. Its dimensions are 17-3/4-Inch (Length) x 9-3/4-Inch (Width) by 11-Inch (Height).

Creative Options Grab & Go Storage Box/Organizer

This includes four #2-3500’s Prolatch Utility Boxes and Bulk Top Storage. ITs dimensions are 11-Inch (Length) by 7-1/4-Inch (Width) by 10-Inch (Height)

Be sure to check out some new ideas at:
New LEGO Storage Opportunities