SD (Space Drawer). Materials: BILLY, LACK Something I made for BILLY (which also works with LACK). Been working on this for a while and am really pleased with it. You can visit my website (sd-cr8.net) which has many pictures showcasing the SD. Self made/designed. Works a treat for small-item storage and fits well into the BILLY and LACK’s look, looks virtually a standard. There are also other add-ons – Page-Hi and the Pender. Makes a great present for BILLY’s 35th. Thanks for viewing, SD See more of the Space Drawer.