I keep a working supply of most common brick sizes in these bins along one wall. The left half is used for the 6 common colors (red, white, yellow, blue, green, black); while the right half is for rarer colors (orange, gray, dark gray, brown, tan). The top row is also used for miscellaneous piece sorting. These 'Tilt-bins' are available from Home Depot stores or directly from the manufacturer: Arnon Caine.